[Monthly Production Declined: Refined Zinc Faces Dual Pressure from Raw Material Supply and Costs] Overall, refined zinc production release in April and May fell short of expectations, mainly because as ex-China mine disruptions increased and China's ore recovery remained limited, TCs accelerated downward. Imported TCs have already dropped to $39.25/dmt, while China's weekly TCs broke below historical lows to 850 yuan/mt in metal content...

[China Zinc Concentrates Market] As of April 30, SMM weekly TCs for domestic zinc concentrates dropped to 850 yuan/mt in metal content, hitting a record low. According to sources, this was mainly because domestic smelters were actively producing, supported by sulphuric acid and by-product metal profits. Additionally, unfavorable import-export price ratios led smelters to prioritize purchasing domestic zinc concentrates, driving domestic TCs notably lower.

China's manganese market has completely moved away from the pattern of rising and falling in unison, with severe divergence across product categories: EMM and Mn3O4 pulled back on weakness, battery-grade manganese sulphate remained resilient and firm with tight spot supply, EMD traded sideways steadily, LMO struggled to catch up passively, and the industry has officially entered a structural market with clear differentiation between strong and weak segments, with distinct investment and stockpiling opportunities hidden beneath the divergence.

China's manganese market showed clear divergence: EMM softened at high levels with prices pulling back, while battery-grade manganese sulphate maintained firm cost support, and market opinions on the May outlook became increasingly divided.

Intermediate Product Production Cuts Materialized, MHP and High-Grade Nickel Matte Payable Indicator Stayed High This Week

On April 24, the SMM Imported Copper Concentrate Index (weekly) stood at -81.44 USD/dmt, down 2.83 USD/dmt from the previous reading of -78.61 USD/dmt. The deeply negative TC reflects the tightness in the global copper concentrate market, which has already shifted from market expectations to an actual rigid contraction in supply. In the first quarter of 2026, the world's leading mining companies frequently revised down their production guidance, with supply-side disruptions far exceeding early-year forecasts. Freeport significantly lowered its full-year 2026 copper production forecast from 1.542 million tonnes to approximately 1.406 million tonnes, with an expected recovery rate of only 65%, due to slower-than-expected mine recovery at its Grasberg site in Indonesia, affected by mudslides and ore moisture. In addition, road blockades caused by strikes at BHP's Escondida and Zaldivar mines have led to actual production impacts that remain to be monitored. According to SMM exclusive data, the global copper concentrate deficit in 2026 is estimated at 317,000 metal tonnes, a situation that may ease somewhat in 2029. In stark contrast to the persistently falling TC, domestic smelter operating rates remained high in Q1 2026. According to SMM data, China's electrolytic copper output in March 2026 reached 1.2061 million tonnes, up 5.58% month-on-month and 7.49% year-on-year. In Q1 2026, total electrolytic copper output was 3.5278 million tonnes, up 4.60% quarter-on-quarter and 10.45% year-on-year. SMM survey data shows that 11 smelters have confirmed maintenance schedules for Q2 2026. This means that domestic electrolytic copper output is expected to decline in Q2, with spot supplies likely tightening temporarily in May and June. However, some smelters have reported that due to high sulfuric acid prices, maintenance completion times may be brought forward. Sulfuric acid is currently the most important by-product revenue source for the copper smelting industry. According to SMM data, on April 24, 2026, China's copper smelting acid index stood at 1,660.5 RMB/ton, up 31.5 RMB/ton from the previous period. As sulfuric acid revenues have risen steadily from 890 RMB/ton at the start of 2026 to 1,660.5 RMB/ton in April 2026, based on the co-production of 3–4.5 tonnes of sulfuric acid per tonne of electrolytic copper, sulfuric acid income can now cover the copper concentrate procurement cost and part of the processing cost for smelters. The upward slope and magnitude of this increase exceed the deterioration in spot TC. The substantial boost in sulfuric acid profitability allows smelters to tolerate lower TC, creating a cycle of "higher sulfuric acid prices, lower TC." Meanwhile, rising gold and silver prices have further expanded smelters' comprehensive profit margins. Although the copper smelting segment is deeply loss-making, driven by the hefty profits from sulfuric acid, gold, and silver, domestic copper smelters have been able to maintain high operating rates without large-scale production cuts caused by deeply negative TC. Additionally, about 20% of the world's electrolytic copper comes from hydrometallurgical processes, with the DRC and Chile together accounting for nearly 80% of that. Hydrometallurgical copper production consumes large amounts of sulfuric acid, and sulfur is a key raw material for sulfuric acid. The current disruption in the Strait of Hormuz has cut off approximately 50–60% of Middle Eastern sulfur shipments by sea, pushing up sulfur and sulfuric acid prices. Worth noting is that as late April 2026 progresses, sulfuric acid export restrictions combined with increased domestic production have shown signs of price softening. If sulfuric acid prices continue to decline, it will directly squeeze the comprehensive profit margins of domestic smelters. At that point, the dual pressure of persistently low TC and falling sulfuric acid prices could trigger real production cuts on the smelting side. Although gold and silver prices do not directly determine TC trends, their macro-pricing logic as part of the non-ferrous metals sector is worth attention. The market has largely priced in the expectation that the Federal Reserve will not cut interest rates at all in 2026, with the first rate cut possibly delayed until July 2027. For copper, a delayed rate cut means no near-term easing of macro liquidity, but copper's core pricing logic remains the ongoing tug-of-war between tightening supply on the mining side and rigid demand. In other words, precious metals are under pressure, but industrial metals' pricing center remains in real supply-demand fundamentals, which explains why weaker gold and silver prices have not dragged copper prices lower. According to SMM, for Chinese smelters, domestic copper concentrate spot TC transactions are feasible in the range of -81 USD/dmt to -88 USD/dmt. Some holders have attempted to offer TC at -100 USD/dmt, while some smelters are willing to accept deliveries at the lower end around -90 USD/dmt. The downward trend in TC has not yet stopped, and smelter purchasing activity may have weakened slightly, but not significantly. Key areas to watch moving forward: Sulfuric acid side: The price trend will depend on the interplay of multiple factors. First, China's sulfuric acid export policy direction: if export restrictions continue, domestic sulfuric acid supply will be relatively abundant, and prices may fall from highs; if exports are temporarily allowed, overseas hydrometallurgical copper supply risks will rise, but domestic sulfuric acid prices may find support. Second, the recovery of sulfur supply: when shipping through the Strait of Hormuz returns to normal will directly affect the pace at which Middle Eastern sulfur can supplement global markets. Third, seasonal demand changes for downstream products such as phosphate fertilizers will also cause periodic price volatility for sulfuric acid. Mining side: Focus on the progress of the Grasberg conversion project, labor negotiation results at Chilean mines, and logistics stability at mines such as Las Bambas in Peru. Any new supply release will effectively ease TC pressure. Macro side: Monitor the Federal Reserve's monetary policy path, the U.S. dollar index, the actual driving effect of China's pro-growth policies on copper consumption, and whether the growth rate of copper demand in global new energy sectors is slowing marginally.

On April 21, a delegation from SMM Information & Technology Co., Ltd. (SMM), comprising Ye Jianhua, Director and Supervisor of SMM's Industry Research Department, Feng Chundi, Expert of SMM's Industry Research Institute, and Wu Tao, SMM's Overseas Marketing Manager for Copper and Tin, visited Lualaba Copper Smelter S.A. (LCS) for a field trip and exchange. The delegation received a warm and thoughtful reception from the leadership of LCS. During the exchange, relevant heads of LCS provided a detailed introduction to the project's construction history, smelting process routes, current capacity operations, and overall business planning. SMM, drawing on global non-ferrous market trends, shared insights on copper-cobalt raw material supply and demand, the smelting and processing landscape, price fluctuation trends, and industry policy developments. Both parties engaged in in-depth discussions on practical topics including production management and control in ex-China pyrometallurgy operations, raw material supply assurance, environmental protection operations and maintenance, cost management, and industry outlook assessment. They also exchanged experiences and ideas on the operational management, risk prevention, and medium and long-term development planning of smelters outside China. This field trip and exchange was pragmatic and efficient, effectively enhancing mutual understanding and laying a solid foundation for ongoing industry information sharing and long-term exchange and cooperation. Introduction to Lualaba Copper Smelter S.A. (LCS) Lualaba Copper Smelter S.A. (LCS) is a modern non-ferrous metal smelting enterprise jointly invested and constructed by China Nonferrous Metal Mining (Group) Co., Ltd. and Chalco Yunnan Copper Group, located in Kolwezi, Lualaba Province, DRC. Construction commenced in March 2018, and Phase I was completed and successfully put into operation in October 2019. It is the first large-scale pyrometallurgical copper-cobalt smelter in the DRC and serves as a key strategic pillar for China Nonferrous Metal Mining Group's resource development and industrial deployment in Africa. With copper concentrates smelting as its core business, LCS's main products include blister copper, sulphuric acid, and liquid sulfur dioxide, with an annual capacity of 150,000 mt of blister copper and 300,000 mt of sulphuric acid. As an important participant in the Belt and Road Initiative, LCS has consistently upheld the development philosophy of "serving the nation through resources and pursuing win-win cooperation," actively fulfilling its social responsibilities, promoting local employment and industrial development, and striving to build an internationally competitive copper smelter while continuously enhancing the influence of Chinese mining enterprises in the global non-ferrous metals industry. The conference is scheduled to be held on October 13–14, 2026 in Lusaka, Zambia. Your participation is welcome~ Contact Person : Wu Tao: 18270916376 jennywu@smm.cn

On April 14, Ye Jianhua, Director and Supervisor of the Industry Research Department of SMM Information & Technology Co., Ltd. (SMM), Feng Chundi, Expert of the SMM Industry Research Institute, and Wu Tao, SMM Copper & Tin Overseas Marketing Manager, visited Chambishi Copper Smelter Limited (CCS) for exchange and survey, where they received warm hospitality from CCS leadership. During the visit, both parties engaged in pragmatic communication based on their respective core businesses. Leveraging its core strengths in non-ferrous metal price index R&D, industry chain big data monitoring, copper market analysis, in-depth industry research, and global non-ferrous resource connectivity, SMM shared insights on international copper market operating logic and price trend analysis, in the context of the current global copper smelting supply-demand pattern, raw material procurement landscape, and TC fluctuation trends. As a key copper smelting producer outside China, CCS provided a detailed introduction to its production and operation status, smelting process advantages, capacity release pace, raw material procurement, and product exports layout, elaborating on practical experience of ex-China copper smelters in production management, cost control, green production, and localized operations. Meanwhile, both parties exchanged views on common industry topics including development pain points of copper smelting outside China, raw material supply security, finished product circulation and trade, industry policy changes, and low-carbon smelting development trends. They also reached preliminary consensus on future directions such as industry chain information sharing, market data sharing, joint market analysis, and industry resource coordination, laying a solid foundation for deepening regular exchanges and promoting high-quality collaborative development of the copper smelting industry chain. Introduction to Chambishi Copper Smelter Limited (CCS) Chambishi Copper Smelter Limited (CCS) is the first large-scale modern pyrometallurgy copper smelting enterprise invested, fully independently designed and constructed by China outside China. Located in the Zambia-China Economic and Trade Cooperation Zone, the company has 170 Chinese staff and 1,600 Zambian employees. CCS has consistently focused on its vision of "building an evergreen, world-class smelter," upholding the corporate spirit of "self-transcendence, continuous breakthroughs, and pursuit of excellence," benchmarking against first-class standards with meticulous craftsmanship, and continuously strengthening and optimizing enterprise management, with its comprehensive competitiveness steadily improving. As of the end of 2024, the company had produced over 3.3 million mt of copper products and 8.7 million mt of sulphuric acid, with cumulative sales revenue of approximately $21 billion, effectively driving local economic development in Zambia and becoming a shining pearl along the Belt and Road! Enterprise History and Development Achievements (Pursuing Excellence, Benchmarking Against the Best and Forging Ahead) To extend the industry chain and retain more added value locally, in 2006, China Nonferrous Metal Mining (Group) Co., Ltd. partnered with Yunnan Copper to introduce the advanced ISA copper smelting process to Zambia, with shareholding ratios of 60% and 40%, respectively. From the design stage, the company drew on successful experience in China and combined it with the characteristics of Zambian raw materials to re-optimize and innovate key processes and technologies of the ISASMELT process, strengthening system integration. This resulted in multiple innovative achievements, including "Integration Innovation and Application of ISASMELT Furnace" and "Comprehensive Automated Control System," which were awarded the First Prize for Scientific and Technological Progress by CNIA in 2010. The ISASMELT furnace campaign life broke world records multiple times, with the second campaign reaching 218 weeks and the third campaign reaching 244 weeks, becoming an international benchmark. In 2021 and 2022, the company's copper production exceeded the designed capacity of 250,000 mt for two consecutive years, making history. In 2024, production further surpassed 260,000 mt, setting a new historical record. In September 2013, the company was honored with the title of Advanced Collective of Central State-Owned Enterprises. In July 2021, it was successfully selected as a benchmark enterprise under the management of the State-owned Assets Supervision and Administration Commission of the State Council. Process Flow (Dedicated and Professional, Pursuing Excellence for Development) The company adopted the internationally advanced and mature process of "oxygen-enriched top-blown submerged bath smelting, electric furnace settling and separation, PS converter blowing, and anode furnace pyrometallurgy refining" to produce copper anode, and the "double-conversion double-absorption" process to produce sulphuric acid. Adhering to the concept of sustainable development, the company built a slag flotation recovery system with a daily processing capacity of 1,500 mt of slag and a bismuth recovery system with a daily processing capacity of 6 mt of flue dust, continuing to recover metals such as copper, cobalt, and bismuth from smelting slag and flue dust. Social Responsibility (Cooperation and Sharing, Giving Back to Society with Strong Responsibility) The company actively practiced its core values of "dedication, cooperation, and sharing," consistently focusing on its core business of copper pyrometallurgy smelting, cooperating extensively with upstream and downstream clients, and sharing development achievements with employees and local communities. Since its establishment, the company had cumulatively paid over $300 million in various taxes and fees in Zambia, created over 5,000 job opportunities, and cooperated with more than 300 local suppliers, contributing to Zambia's green, harmonious, and shared development. The company actively fulfilled its social responsibilities by increasing investment in social welfare programs for local communities in Zambia, covering infrastructure, education, healthcare, and sanitation. It sponsored the renovation of clinics in Kalulushi, the Bushifire Orphanage, and donated to build classrooms at Buyantashi School, Luato Market, Kankuko Bridge, Chibuluma Community Tennis Court, Chimfunshi Chimpanzee Rescue Center, and Modern Stars Football Club, among others. The cumulative investment exceeded $4 million, earning high praise from the local government and warm welcome from the public, and establishing a positive corporate image. The company actively promoted employee localization and continuously achieved skills transfer. The company invested over 5 million Kwacha, and externally carried out technical and non-technical training programs in electric welding, electrical power, pneumatics, technical control, management supervision, and equipment maintenance through the China-Zambia Vocational and Technical College, TEVETA Fund, and other channels. Internally, through mentorship programs, the company conducted business training in masonry, fitting, and other skills. The localization rate of company employees reached over 92%, local employees' skills were significantly improved, and technical expertise was exported to the DRC. Vision and Outlook (Staying True to Our Mission, Building a Shared Future Together) Innovation-driven development knows no bounds. Over the past decade, the company has upheld a sense of survival crisis and market competition awareness, adhered to innovation-driven development, and achieved high-quality growth. In 2021, the company's IT infrastructure was completed and successfully put into use, committed to building an automated, digitalized, and intelligent factory. In August 2023, the company's anode furnace pyrometallurgy refining system technical renovation project was completed and put into operation. In November 2024, the company's three-year action plan for technology-empowered safety and environmental protection was officially established, focusing on technology empowerment and fostering new quality productive forces, propelling the company's high-quality development to a new level. Through collaborative development, benchmarking against first-class standards, technological innovation, and increased production and efficiency, the company continues to advance toward its enterprise vision of "becoming an evergreen, world-class smelter." is scheduled to be held on October 13-14, 2026 in Lusaka, Zambia. Welcome to participate! Contact Person : Wu Tao: 18270916376 jennywu@smm.cn

As of April 24, the average domestic zinc concentrate TC dropped to 1,050 yuan/mt in metal content, and the imported zinc concentrate TC fell to -$36.13/dmt. Overall, zinc concentrate TCs continued to decline, with imported zinc concentrate TCs deepening further into negative territory. In May, domestic zinc concentrate TCs in multiple regions plan to further drop to three-digit levels.

[Zinc Industry Co., Ltd. Released 2025 Annual Report] On April 24, Zinc Industry Co., Ltd. released its 2025 annual report. During the reporting period, the company's production was as follows: zinc (270,200 mt), lead (29,900 mt), copper (116,700 mt), and sulphuric acid (659,700 mt). The company achieved operating revenue of 18.529 billion yuan and net profit attributable to shareholders of the publicly listed firm of 68.1487 million yuan. In 2026, the company plans to complete total non-ferrous metal production of 390,000 mt and total chemical products production of 742,000 mt, including zinc (260,000 mt), lead (30,000 mt), copper (100,000 mt), sulphuric acid (730,000 mt), and zinc sulphate (12,000 mt).