2026 marks the opening year of the “15th Five-Year Plan”. Against the backdrop of intensifying global macro volatility and the deepening advancement of high-quality development in China, the zinc industry is undergoing profound transformation: tightness at the ore end and the release of smelting capacity are creating structural tension; divergence between domestic and overseas inventory reflects the complex dynamics of supply and demand rebalancing; and technological innovation is becoming the key momentum to resolve contradictions and reshape the landscape. Key “15th Five-Year Plan” sectors such as new energy and new-type infrastructure are injecting fresh momentum into traditional zinc consumption, while green, low-carbon development and the circular economy are also accelerating the reshaping of industrial logic under the drive of technological innovation. With the joint support of upstream and downstream enterprises in the zinc industry, industry associations, and other relevant parties, SMM the 2026 SMM Zinc Industry Conference and the 8th Hot-Dip Galvanizing Industry Development and Technological Innovation Forum, and the 14th Zinc Salts, Zinc Oxide and Secondary Zinc Resources Development Forum, and the Casting Zinc Alloy Development Forum are about to be held in Qingdao, Shandong, from August 6 to 8. Under the theme “Harness Zinc Momentum · Build the Zinc Industry · Embark on a New Journey”, the conference will be driven by a dual engine of macro perspective and fundamentals analysis, closely aligned with the main line of high-quality development under the “15th Five-Year Plan”. It will focus on four key dimensions—macro policy, the supply-demand pattern, global trade, and technological innovation—leveraging technological breakthroughs to drive cost reduction and efficiency improvement, and using collaborative innovation to address market fluctuations, jointly charting a new blueprint for high-quality and sustainable development of the zinc industry.‌ Jiangsu Myande Energy-Saving Evaporation Equipment Co., Ltd. will make a distinguished appearance at this grand event, joining industry peers to discuss industry development trends and work together to propel the zinc industry to new heights. Click to register for the conference now, and jointly witness and participate in this extraordinary and far-reaching industry event, creating a brilliant new chapter together! System Solution for Resource Utilization of High-Salinity Wastewater in the Metallurgical Industry From “High-Salinity Burden” to “Resource Gains”—Empowering Green and Intelligent Manufacturing in Zinc Smelting I. Wastewater Treatment Challenges in the Secondary Zinc Industry A large volume of high-salinity wastewater is generated during zinc recovery from zinc-containing scrap, requiring compliant environmental protection treatment with stringent standards. This results in both high investment in environmental protection equipment and high subsequent operating costs, compressing enterprise profit margins. Moreover, secondary waste is generated after environmental protection disposal, adding disposal costs and making it difficult for enterprises to continue bearing the burden. II. Root Causes of Wastewater Treatment In the zinc recovery process for zinc-containing scrap, low-grade zinc oxide must be rinsed to remove chlorides and other impurities in the raw material to avoid affecting the purity of zinc products. In addition to sodium chloride and potassium chloride, the rinsing wastewater also contains sulphate radicals, fluoride, COD, and many other components. Its composition is complex and fluctuates significantly, making wastewater treatment highly challenging. III. Three Core Processes, One-Stop Breakthrough 1. Deep pre-treatment—precisely removes fluorides, heavy metals, and organic matter, ensuring long-term stable operation of the system 2. Evaporation Concentration + Fractional Crystallization—Recovering High-Purity Potassium Chloride and Sodium Chloride, Achieving Salt Resource Recovery 3. Evaporative Condensate Reuse in Production Processes—Self-Circulation of Process Water, Achieving True "Zero Discharge" 4. Dual Benefits Empowering Enterprises Turning high-salinity wastewater into a valuable resource, while achieving environmentally compliant disposal, recovering salt resources, with revenue covering operating costs, shortening the payback period, and enhancing overall economic benefits. Contact Person Zhu Manager 15161877256 Wu Manager 15952706514 Tel: 0514-87843988 Email: zzj@myande.com Website: evap.myande.com Address: No. 199 Ji’an South Road, Yangzhou, Jiangsu Province Product Inquiry QR Code Evaporation Official Website QR Code Official Website QR Code Official WeChat QR Code Long-Press to Scan to Register Now 2026 SMM Zinc Industry Conference

“Tin” Guiding the Future: Industrial Transformation and Value Reshaping in a New Cycle Conference Background Currently, the global tin industry stands at a historic turning point. The logic of traditional cycles has been completely shattered, and its strategic value is fully emerging. The tin market in 2026 presents an unprecedentedly complex pattern and profound transformation: 1. In-depth reconstruction of the supply-demand pattern, with its strategic attributes elevated to an unprecedented level. The global static reserve-to-production ratio of tin is only 14 years, and its scarcity is increasingly pronounced. The supply side faces “triple pressure”: repeated setbacks in Myanmar’s production resumptions, continuously tightening policies in Indonesia, and high geopolitical risks in the DRC. Resource constraints have already become the new normal. Meanwhile, a fundamental shift is taking place in the demand structure. Tin has become a strategic resource bridging traditional manufacturing and the digital future. 2. A historic breakthrough in the price system, reshaping the industrial ecosystem. In early 2026, SHFE tin prices breached 470,000 yuan/mt, setting a new record high. This price breakthrough not only reflects the supply-demand imbalance but also marks a revaluation of the tin industry. Traditional trade models, risk management systems, and supply chain collaboration methods all urgently require innovative breakthroughs. 3. Technology-driven innovation and the green transition are fostering a new symbiotic ecosystem. Digital and intelligent technologies are deeply empowering the tin industry chain. The global green transition requires the tin industry to upgrade toward low-carbon and circular economy models, making recycled tin recovery and green smelting processes essential paths. All links in the industry chain must move from competition to collaboration, building an open, resilient, and innovative symbiotic system. Against this backdrop, the August 19-21, 2026 in Changsha, Hunan held 2026 SMM (16th) Tin Industry Chain Conference will bring together global industry elites for discussion. Yunnan Tin Co., Ltd. will attend this grand event, discuss industry development trends with peers, and jointly propel the tin industry to new heights. Click the to register now, and join us to witness and participate in this extraordinary, far-reaching industry event, creating a brilliant new chapter together! Yunnan Tin Co., Ltd. (hereinafter referred to as the Company) was restructured and established in 1998, with its predecessor tracing back to the Gejiu Factory Affairs Investment Bureau, which was founded in 1883 (the ninth year of the Guangxu reign of the Qing Dynasty) with official funds from the imperial court. In February 2000, the Company was listed on the Shenzhen Stock Exchange under the stock name “Tin Industry Co., Ltd.” and stock code 000960. The Company has been ranked on the Fortune China 500 for consecutive years, placing 1st among the 2023 Yunnan High-Tech Enterprises Top 100 and 2nd among the 2023 Yunnan Manufacturing Enterprises Top 100. The Company holds the world’s largest reserves of tin and indium resources, and operates China’s largest tin production and processing base. It has built up a capacity of 80,000 mt/year of tin smelting, 125,000 mt/year of cathode copper, 100,000 mt/year of zinc smelting, and 60 mt/year of indium smelting. Its key equity-holding subsidiary has a capacity of 43,000 mt/year of tin materials and 27,100 mt/year of tin chemicals. Meanwhile, the Company is the only enterprise in China that holds the qualification for processing trade with imported materials for both tin concentrates and copper concentrates, with the right to re-export. Among the Company’s main products, key products such as tin ingots, indium ingots, and deep-processed tin and indium products have unique market and brand advantages. The “YT” brand tin ingots registered on the London Metal Exchange are an internationally renowned brand and a “China Famous Brand” product certified for export quality. The Company has established a marketing and distribution system covering major tin product markets in and outside China, with offices in Chinese cities like Beijing, Shanghai, and Shenzhen as well as in Hong Kong, the US, and Germany. Its products are sold to more than 30 countries worldwide. Tin product sales account for roughly half of the Chinese market and a quarter of the global market. Since 2005, the Company’s tin production and sales volume has ranked first globally. In the future, Yunnan Tin will take the inclusion in the list of “Creating World-class Professional Exemplary Enterprises” released by the State-owned Assets Supervision and Administration Commission of the State Council (SASAC) as a major opportunity, deepen the creation work, focus on enhancing core competitiveness and strengthening core functions, further strengthen resource expansion, modern mining, raw material manufacturing, reinforce conservation-oriented development and utilization of resources, promote intelligent mining and intelligent smelting, and strive to become a world-class provider of key non-ferrous metal raw materials featuring distinctive professional advantages, innovation-driven development, lean management, and distinctive characteristics. Yunnan Tin Co., Ltd. was restructured and incorporated in 1998, with its origin tracing back to the Gejiu Mining & Merchants Bureau funded and established by the imperial court in 1883. In February 2000, the Company was listed on the Shenzhen Stock Exchange under the stock short name "Yunnan Tin" and stock code 000960. It has been featured on the Fortune China 500 list for consecutive years, ranking No.1 among Yunnan Top 100 High-tech Enterprises 2023 and No.2 among Yunnan Top 100 Manufacturing Enterprises 2023. The Company holds the world’s largest reserves of tin and indium resources, and operates China’s largest tin production and processing base. Its self-owned production capacities stand at 80,000 tons of tin smelting, 125,000 tons of cathode copper, 100,000 tons of zinc smelting and 60 tons of indium smelting per annum. Key invested subsidiaries boast annual capacities of 43,000 tons of tin materials and 27,100 tons of tin chemicals. Meanwhile, it is the only domestic enterprise qualified for import and re-export processing of both tin and copper concentrates in China. Among the Company’s core products, tin ingots, indium ingots, and deep-processed tin-indium products enjoy distinctive market and brand advantages. The registered "YT" brand tin ingot on the London Metal Exchange (LME) is a world-famous brand and a national "China Top Brand" for export quality. The Company has built a marketing and distribution network covering major domestic tin product markets across Beijing, Shanghai, Shenzhen and other cities, as well as Hong Kong, the United States, Germany and other overseas regions, with products sold to more than 30 countries worldwide. Its tin product sales account for roughly half of China’s total market demand and one quarter of the global market, and the Company has maintained the world’s top position in tin output and sales volume since 2005. Being shortlisted in the State-owned Assets Supervision and Administration Commission’s list of "Enterprises Pioneering the Development of World-Class Professional Leading Companies" as a major strategic opportunity, Yunnan Tin will thoroughly advance related development initiatives. Centering on boosting core competitiveness and reinforcing core functions, the Company will further consolidate resource expansion, modern mine construction and raw material manufacturing businesses. It will strengthen the protective development and utilization of mineral resources, advance smart mining and intelligent smelting, and strive to grow into a world-class supplier of key non-ferrous metal raw materials featuring prominent professional advantages, innovation-driven development, lean management and distinctive industrial characteristics. Contact Information Tin Ingot Product Sales: Luo Huayuan 18516225787 Tin Material Product Sales: Zhang Xuefeng 13577064765 Tin Chemical Product Sales: Lin Jun 18687193400 Tin Raw Material Procurement: Duan Pengfei 13577328782 Long Press to Scan QR Code to Register Now 2026 SMM (16th) Tin Industry Chain Conference

According to China Customs data, China imported 2.7616 million tonnes (gross weight) of zinc concentrate during January–June 2026, up 8.98% year on year, with overall imports posting modest growth compared with the same period last year.

[Import Growth Masks Supply-Demand Tightening – Review and Outlook of China's Imported Zinc Concentrates Market in H1 2026]: According to customs data, China's zinc concentrates imports from January to June 2026 totaled 2.7616 million mt, up 8.98% YoY, with overall imports edging up YoY......

In H1 2026, China’s sulphur market experienced a full transmission chain of “import collapse – output pressure – export stagnation”. Key figures: Production: National sulphuric acid output in January–May fell 1.6% y‑o‑y, with significant declines in traditional phosphate fertiliser producing provinces like Hubei, Guizhou, and Yunnan, while Anhui and other smelter‑acid‑concentrated regions saw growth. Exports: Sulphuric acid exports practically halted in June......

SMM, July 23: To deepen exchanges within the zinc industry, smooth industrial information channels, and accurately grasp development trends and market dynamics, an SMM team—Geng Zhiyao, Senior Analyst for Copper, Lead & Zinc; Li Hanyu, Senior Analyst for Zinc; and Dai Junxiu, Senior Business Manager— visited Yunnan Chihong Zn & Ge Co., Ltd. on July 23 for discussions and was warmly received by the company’s leadership. During the talks, the two sides conducted in-depth discussions on topics including the zinc raw material supply landscape, smelting capacity changes in and outside China, zinc price operating logic, and downstream demand evolution trends. They also exchanged views on issues such as mining cost control, zinc smelting process optimization, comprehensive recovery of associated rare and precious metals, green smelting upgrade pathways, overseas resource development opportunities, and industry cycle risk prevention. Leveraging industry big data, the SMM team shared their current supply-demand market assessments and medium to long-term industry outlook. Yunnan Chihong Zn & Ge, drawing on its resource presence both in and outside China and its entire industry chain operational practices, outlined its enterprise production and operating plans as well as its development ideas on technological innovation and green transformation. This visit established a strong communication platform. SMM gained on-the-ground understanding of the actual production and operating conditions of a leading zinc enterprise, enriching its frontline survey information; Yunnan Chihong Zn & Ge simultaneously obtained cutting-edge industry information to inform its daily production and operations. Both sides agreed to maintain ongoing communication and exchange, share industry information, and jointly support the high-quality, sustainable development of the zinc industry. About Yunnan Chihong Zn & Ge Co., Ltd. Yunnan Chihong Zn & Ge Co., Ltd. (referred to as "Chihong Zn & Ge") is a tertiary-level operating enterprise under Chalco. Founded on July 18, 2000, its predecessor was the Yunnan Huize Lead-Zinc Mine, one of the 156 key construction projects under China’s First Five-Year Plan. Its affiliated Lanping Lead-Zinc Mine is a world-renowned lead-zinc mine, and both are important pillars of China’s lead and zinc industry. After 74 years of industrial accumulation and innovation empowerment, the company has continuously pursued advancements in resource security, technological innovation, green transformation, and industry chain extension. It has developed a complete industrial chain covering resource exploration, mining, beneficiation and smelting, deep processing, and comprehensive recovery. Its industrial footprint spans 7 provinces across 3 countries, with lead and zinc resource reserves, concentrate and refined product production, and overall competitive strength ranking first in China and fourth globally in the lead and zinc industry. The company is highly competitive within the industry: its mine C3 cost is in the top quartile, and its smelting C3 cost is in the top half of the industry. Multiple technical and economic indicators lead the sector, with its zinc beneficiation recovery rate, lead beneficiation recovery rate, lead crude smelting recovery rate, total electro-zinc smelting recovery rate, and zinc hydrometallurgical direct recovery rate all reaching world-class levels. Built 7 green mines and 6 green factories, with crude lead, electrolytic zinc, and electrolytic lead products rated as National Energy Efficiency "Pacesetters". It holds 1,381 valid patents, and multiple scientific research projects have been successively awarded the Yunnan Provincial Science and Technology Progress Special Prize and the National Science and Technology Progress Second Prize. It has undertaken key projects of the State Council SASAC's "Rejuvenation Action" and "Voyage Action", owns 10 national high-tech enterprises, and has been successively honored with titles such as "Advanced Grassroots Party Organization of Central State-Owned Enterprises" and "Nomination for the National Quality Award". SMM Contact Person: Geng Zhiyao Contact Number: 13818541149

SMM, July 23: To deepen exchanges within the lead and zinc industry, facilitate information channels, and accurately capture zinc industry development trends and market movements, on July 22, a team from SMM Information & Technology Co., Ltd. (SMM), including copper-lead-zinc senior analyst Geng Zhiyao and zinc senior analyst Li Hanyu, visited Yunnan Luoping Zinc & Electricity Co., Ltd. for an exchange meeting and were warmly received by relevant company leaders. During the meeting, relevant personnel from Luoping Zinc & Electricity introduced the company's operational status, industry chain layout, and medium and long-term strategic plans to the SMM team. The two sides engaged in in-depth discussions on topics including domestic zinc raw material supply, smelting cost changes, zinc product market trends, downstream demand trajectories, comprehensive recovery of associated rare and precious metals, and the development direction of green smelting. Leveraging SMM's industry database, SMM analysts shared supply-demand analyses for the zinc market, price dynamics, and potential industry opportunities, and exchanged views with the company on challenges in industrial development. Luoping Zinc & Electricity, drawing on its own strengths in hydropower integration, mine resources, and integrated smelting and deep processing, outlined its advancement approaches in resource expansion, technological R&D, and extension into new materials. This visit established a bridge for industry information sharing. In the future, both parties will maintain regular communication and exchanges, continuously collaborate to explore paths of industrial synergy, and jointly promote the steady and high-quality development of the zinc industry. About Yunnan Luoping Zinc & Electricity Co., Ltd. Yunnan Luoping Zinc & Electricity Co., Ltd. was established in 2000 and listed on the main board of the Shenzhen Stock Exchange in 2007 (stock code 002114). Its largest shareholder is Qujing Development and Investment Group, holding a 22.3960% stake, and the actual controller is the Qujing Municipal State-owned Assets Supervision and Administration Commission. Key Assets: It encompasses three core resource sectors: minerals, hydropower, and zinc smelting, housing production units such as the Fule Lead-Zinc Mine, Lazhuang Power Plant, zinc smelter, comprehensive utilization plant, and ultrafine zinc powder plant. The company boasts an integrated capacity of processing 100,000 mt of raw ore annually, producing 120,000 mt of electrolytic zinc, 140,000 mt of sulphuric acid, 12,000 mt of ultrafine zinc powder, and generating 250 million kWh of electricity per year, with an annual output value exceeding 2 billion yuan. This forms a complete industry chain of "power generation — mining — smelting — rare and precious metals recovery — new materials." Coupled with its self-contained hydropower energy loop, this creates a unique core competitive advantage, positioning the company as a leader in the non-ferrous metal smelting sector in Southwest China. Main Businesses: Hydropower generation, mining of non-ferrous metals such as lead and zinc, zinc smelting, and production and sale of extended products. The products include zinc sulfide concentrates, lead concentrates, zinc ingot, industrial sulphuric acid, cadmium, ultrafine zinc powder, germanium concentrates, silver concentrates, copper concentrates, zinc alloy, industrial and residential electricity, and edible rapeseed oil. The company has successively received honors such as “Contract-honoring and Credit-worthy Enterprise” at provincial and municipal levels, “Key Industrial Enterprise of Qujing City”, National Intellectual Property Advantage Enterprise, High-tech Enterprise, and National Laboratory Accreditation Certificate. Strategic Development: In terms of hydropower resource development, first, it invested in and participated in the construction of the Luoping County Laodukou Hydropower Station with an installed capacity of 37,500 kW, holding 37% equity; second, it invested in and participated in the construction of the Laojiāngdǐ Hydropower Station in Xingyi City, Guizhou Province, with an installed capacity of 100,000 kW, holding 33% equity. In terms of lead-zinc mine development, first, it invested in and participated in the development of the Jinsha Lead-zinc Mine in Yongshan County, holding 23.2% equity. Second, through a private placement of shares, it completed the overall acquisition of Puding County Xiangrong Mining, Derong Mining, and Hongtai Mining Co., Ltd. under Guizhou Fanhua Mining Group Co., Ltd., gaining control of the mine assets held by the three companies. In terms of business development, first, it acquired the sulphuric acid plant of the former Luoping County Zinc Electric Company. Second, it built a rapeseed oil production line with a capacity of 10,000 mt per year. Third, it established a wholly-owned subsidiary, Yunnan Luoping Zinc Electric New Materials Co., Ltd., to extend the industry chain through zinc alloy products. Technological Innovation: The company holds 78 patents. Among them, the comprehensive treatment and recovery of valuable metals from high-iron, low-germanium zinc oxide calcine and zinc sulfite is at an industry-leading level. SMM Contact: Geng Zhiyao Tel: 13818541149

SMM, July 21 – To deepen industry exchanges, smooth information channels, and accurately grasp development trends and market dynamics in the zinc and indium sectors, on July 21, a team from SMM Information & Technology Co., Ltd. (SMM) — including Geng Zhiyao, Senior Analyst for Copper, Lead and Zinc; Li Hanyu, Senior Zinc Analyst; and Dai Junxiu, Senior Business Manager — visited Yunnan Tin Wenshan Zinc Indium Smelting Co., Ltd. for an exchange and was warmly received by relevant leaders of the company. During the exchange, the two parties had in-depth discussions on core industry topics, such as current zinc and indium price trends, the enterprise’s comprehensive recovery technologies for zinc and indium metals, existing production and processing capacity, and the regional layout of new mine capacity. Meanwhile, the SMM team introduced in detail the platform’s existing pricing system, pricing logic, and mainstream market application scenarios, conducted in-depth exchanges with the enterprise on industry pricing standards and market quotation applications, fully listened to frontline production and market demands, and further broke down information barriers between upstream and downstream. This visit effectively consolidated the foundation for information sharing across the industry and provided strong support for accurately assessing zinc and indium market trends and promoting the green, high-quality, and standardized development of the industry. Profile of Yunnan Tin Wenshan Zinc Indium Smelting Co., Ltd. Yunnan Tin Wenshan Zinc Indium Smelting Co., Ltd. is a wholly-owned subsidiary of Yunnan Tin Co., Ltd. Established in May 2016 with a registered capital of 1.1 billion yuan and 843 registered employees, it is a state-owned enterprise integrating production, R&D, and trade, mainly engaged in the smelting, processing, sales, and trading of non-ferrous metals and ore products. After six years of independent process and equipment R&D, the company overcame the industrialization challenges of hematite technology and equipment. In 2018, it invested 2.44 billion yuan to build China’s first and the world’s second demonstration plant for hematite iron removal hydrometallurgical zinc smelting. The plant reached full production and standards within one year, with core indicators leading the industry: zinc recovery rate >98%, indium recovery rate >83%, copper recovery rate >95%, lead and silver recovery rate >99%, iron resource utilization rate >95%, comprehensive energy consumption for zinc electrowinning 99.96%, and tail gas SO 2 <60 mg/Nm 3 . Leveraging its technological and green development strengths, the company has received more than 30 honors, including national-level “Quality Engineering” award, national-level specialized and sophisticated key “Little Giant” enterprise, national-level green factory, and high-tech enterprise. It holds 42 authorized patents (including 21 invention patents), and three of its core technologies have won the First Prize of China Nonferrous Metals Industry Science and Technology Award. The “New Green and Efficient Zinc Smelting Technology for Complex Polymetallic Iron-bearing Sphalerite” and the “Hematite Process for Iron Removal and Zinc Smelting” have been respectively listed by the National Development and Reform Commission (NDRC), the Ministry of Industry and Information Technology (MIIT), and other authorities in the industry carbon peak action plan and energy-saving and carbon-reduction guide, and are promoted as key advanced technologies. SMM Contact: Geng Zhiyao Tel: 13818541149

SMM News, July 20: To deepen industry exchanges, facilitate information channels, and jointly explore development trends and market dynamics in the lead and zinc industry, on July 20, Geng Zhiyao, Senior Analyst for Copper, Lead and Zinc at SMM Information & Technology Co., Ltd. (SMM), Li Hanyu, Senior Analyst for Zinc, and Dai Junxiu, Senior Business Manager, headed to Mengzi Mining and Metallurgy Co., Ltd. for a visit and discussions, and were warmly received by the company’s leaders. During the meeting, the two sides held in-depth and pragmatic discussions on comprehensive market topics across the lead and zinc industry, focusing on core issues such as the global zinc ore supply-demand pattern, the operational logic of mine TCs, supply-demand fundamentals and price trends of zinc ingots and lead ingots, social inventory changes, and import-export flows. At the same time, they communicated in detail and exchanged views on SMM’s metal pricing methodology, spot pricing models for lead and zinc, industry index applications and platform empowerment, enterprises’ raw material procurement status, production operation pace, and overseas market layout plans, further consolidating industry consensus and breaking down information barriers. This visit effectively narrowed the cooperation gap between SMM and Mengzi Mining and Metallurgy, strengthening the foundation of mutual trust. In the future, the two sides will continue to deepen regular exchanges and cooperation, leveraging their respective resources and professional strengths to precisely meet industry needs, share industry data and research results, support stable corporate operations and high-quality industry development, and achieve mutual benefit, win-win outcomes, and coordinated development. About Mengzi Mining and Metallurgy Co., Ltd. Mengzi Mining and Metallurgy Co., Ltd., founded on June 9, 1996, with registered address at No. 66 Tianma Road, Mengzi City, Honghe Prefecture, Yunnan Province, and a registered capital of 51.11 million yuan, is a private mining and metallurgy enterprise integrating resource exploration, mining, beneficiation, and smelting, with a primary focus on comprehensive resource recovery and utilization. With over 20 years of deep engagement in the industry, the company has achieved cumulative operating revenue of nearly 35 billion yuan and paid taxes totaling 3.5 billion yuan. It is a core pillar enterprise in Mengzi City and a key backbone non-public enterprise in Yunnan Province. The company has a well-established industrial layout and complete business portfolio, comprising one main mine, two auxiliary mines, three beneficiation plants, and one smelting branch, along with a wholly owned subsidiary for technology development and multiple wholly owned subsidiaries in trade and supply chain. It has an independent geological exploration team and holds mining rights covering nearly several hundred square kilometers across Honghe, Wenshan, and Lincang prefectures in Yunnan. The main mine, Bainiushan Silver Polymetallic Mine, has proven abundant resources, laying a solid foundation for development. The company’s main products include lead ingots, zinc ingots, antimony ingots, silver ingots, and sulphuric acid, with comprehensive recovery of various valuable metals such as tin, copper, antimony, bismuth, cadmium, iron, sulphur, and gold. The company's operations mainly span the upstream and midstream segments of the lead-zinc industry, with an industry chain encompassing mining, mineral processing, smelting, and trading. It has a sound trade management system and a professional trading team, implementing a major client sales strategy primarily covering procurement and sales. Most of its collaborative suppliers are large state-owned enterprises, publicly listed firms, and industry leaders. Mengzi Mining and Metallurgy Co., Ltd. has six subsidiaries, including three wholly owned subsidiaries and one joint-stock subsidiary, which are mainly engaged in trading and technology businesses. Leveraging its solid industrial strength and robust technological innovation capabilities, the company has garnered numerous prestigious accolades. In 2025, it ranked 41st on the "Yunnan Top 100 Non-Public Enterprises" list, 62nd on the "Yunnan Top 100 Enterprises" list, and 26th on the "Yunnan Top 100 High-Tech Enterprises" list. In 2024, it was awarded the Second Prize of the National Science and Technology Progress Award jointly by the Central Committee of the Communist Party of China and the State Council. It is a renowned local enterprise, a pillar enterprise in Mengzi City, a Yunnan Provincial Green Factory, a National High-Tech Enterprise, and its overall efficiency ranks among the top 5 in the industry. Within Yunnan's lead-zinc smelting sector, the company's actual lead and zinc metal capacity is second only to Yunnan Chihong Zn & Ge Co., Ltd. 1. Lead and Zinc Smelting (1) Zinc Smelting The smelter was completed and put into operation at the end of 2006, with a design scale of 49,000 mt of zinc ingot and 50 mt of indium ingot per year, and comprehensive recovery of valuable metals such as sulphuric acid, silver, copper, and cadmium. Currently, the main products and production capacities of the company's zinc smelting segment are: Main products: 80,000 mt of zinc ingot, 135,000 mt of 98% sulphuric acid (with an actual capacity of up to 170,000 mt), and 80 mt of indium ingot. By-products: 900 mt of copper sulphate, 400 mt of cadmium ingot, 4,000 mt of lead metal from lead-rich wet-process sludge (of which 3,000 mt is self-produced, and 1,000 mt comes from low-grade zinc oxide from the comprehensive plant), and 10 mt of silver metal from silver-rich wet-process sludge. (2) Lead Smelting The company's lead smelting segment, which enables comprehensive recovery of valuable metals such as silver, antimony, and copper, began construction in 2012 and was completed and commissioned in March 2014. The equipment is currently in good condition, and all permits related to safety, environmental protection, occupational health, and fire safety are valid and meet all relevant national requirements. The production capacity for the main products of the company's lead smelting segment is: 60,000 mt of lead ingot, 100 mt of silver ingot, 3,500 mt of antimony ingot, 60,000 mt of sulphuric acid, 1,000 mt of lead matte (copper metal), and 5,000 mt of zinc oxide metal. 2. Lead-Zinc Ore Mining and Processing The Mengzi Mining and Metallurgy mine is located at Bainiuchang Village Committee, Laozhai Township, Mengzi City, Honghe Prefecture, Yunnan Province (referred to as the Bainiuchang Mine). The mining area extends from Niuzuodi River in the north to Yutang Village in the south, and from Miwei Village in the west to Awei Village in the east, covering a mining and exploration rights area of 30 km². The mine is 60 km from downtown Mengzi and 9 km from the Mengzi–Wenshan third-class highway, ensuring convenient transportation. Roads within the mining area connect to the beneficiation plant, villages, and various adits, facilitating smooth access. Since the development of the Bainiuchang mine, essential industrial sites and auxiliary facilities have been gradually established to meet production and daily living needs. These include the mine headquarters, surface facilities and living quarters for Work Areas 1, 2, 3, and 4, the Baiyang No. 8 waste dump, No. 1 and No. 4 waste dumps, and surface material and equipment warehouses. An internal and external road transport system has been developed, providing direct access to all adits. The mining area comprises five ore blocks—Baiyang, Duimenshan, Chuanxindong, Awei, and Miwei—stretching approximately 5 km east–west and 5 km north–south. To date, the company holds three mining rights certificates and four exploration rights certificates for the mine. The Bainiuchang mine (the following are separate ore blocks within the same mining property) 3. Hazardous Waste Processing The enterprise has obtained a hazardous waste operating permit, with an annual treatment capacity of 98,000 mt. It can reprocess slag generated from its own smelting operations. Yunnan Province currently has a total of 69 Comprehensive Operation Permits under the Yunnan Province Hazardous Waste Operation Permit system, of which approximately 15 cover lead- and zinc-related hazardous waste. The company is the largest processor of hazardous waste materials for publicly listed state-owned enterprises such as Yunnan Copper Zinc, Yunnan Chihong Zn & Ge Co., Ltd., and Luoping Zinc & Electricity. 4. Sales and Trading The company operates a well-established trade management system supported by a professional trading team, implementing a key account sales strategy. It primarily handles procurement and sales, with most of its supplier partnerships formed with large state-owned enterprises, publicly listed firms, and industry leaders. Among its downstream clients, Xiamen Xiangyu Logistics Group Co., Ltd. is a state-owned enterprise, a Fortune Global 500 publicly listed firm, and one of China’s largest lead ingot traders. It mainly purchases zinc ingots from the mining and smelting company, with ingot trading accounting for over 70% of its total purchase and sales volume. Honghe Prefecture Hongtou Industrial Co., Ltd. is a state-controlled enterprise under Honghe Prefecture Development and Investment Holding Group Co., Ltd. It is a diversified company engaged in domestic and international trade in goods and technologies, materials supply and distribution, project investment and construction management, and new energy development and construction. It is a strategic trade partner introduced by the company. SMM Contact: Geng Zhiyao Tel: 13818541149

[Covering Seven Major Production Regions! SMM Launches Daily Provincial Profit Indicator for Zinc Smelting Using 40% Imported Ore] In May 2026, SMM added daily profit models for domestic ore in the eight major zinc smelting regions of Inner Mongolia, Henan, Gansu, Hunan, Guangxi, Yunnan, Shaanxi, and Sichuan for market reference. ...