【SMM Port Inventory of Imported Bauxite】According to SMM's statistics on April 30, the total bauxite inventory at ten domestic ports increased by 650,000 mt from the previous week.

SMM News, April 27: On April 24, 2026, market rumors emerged that Guinea would cap its bauxite export volume at 150 million tons, with the relevant policy to be officially released on April 25. The news drove a sharp rise in alumina during the overnight session that day. The main alumina contract 2609 hit a high of 2,899 yuan per ton and closed at 2,894 yuan per ton, up 2.76% from the previous settlement price. As of April 25, 2026, no updated official policy documents had been released on relevant government websites in Guinea. Per market rumors, Guinea’s bauxite exports will be restricted to 150 million tons. Should the final policy be implemented as rumored, based on Guinea’s general bauxite trade flow ratios and historical shipment volumes, SMM estimates that domestic bauxite imports from Guinea will drop to approximately 132 million tons in 2026. Customs data for 2025 showed domestic imports of Guinea bauxite stood at around 149 million tons, Australian bauxite imports at roughly 37.42 million tons, and non-mainstream source bauxite imports at about 14.26 million tons. If Guinea bauxite imports fall to 132 million tons in 2026, Australian bauxite imports remain largely stable, and non-mainstream bauxite imports edge down to around 12.5 million tons, the total domestic bauxite import volume is projected to decline to roughly 182 million tons. SMM forecasts domestic bauxite output to reach 79 million tons in 2026 (including volumes supplied for non-metallurgical alumina production), putting the total domestic bauxite supply at approximately 261 million tons for the year. SMM estimates domestic metallurgical alumina output at 87.22 million tons in 2026, sufficient to support a annually aluminum production capacity of 45.3 million tons. The alumina market will shift to a net import status. Factoring in bauxite demand for non-metallurgical alumina segments, overall bauxite total demand is expected to hit around 262 million tons. On the whole, the bauxite market fundamentals are set to shift into a tight balance in 2026. Amid raw material inventory buildup demand from newly commissioned alumina capacity, the bauxite market is theoretically poised to face mild tight supply conditions. However, actual market performance is expected to be looser than modelled calculations, for the following key reasons: Electrolytic aluminum production cuts in the Middle East have exacerbated overseas alumina surplus, while global bauxite supply contraction has lifted price expectations. Rising domestic bauxite prices will push up local alumina production costs, further enhancing the cost competitiveness of overseas alumina. Higher alumina imports will replace part of bauxite imports, easing domestic bauxite supply tightness. Elevated inventory levels will ease market tightness. In 2025, high price incentives drove a substantial increase in bauxite supply, resulting in a notable supply surplus and sharp inventory accumulation.Data from SMM showed domestic port bauxite inventories stood at 21.32 million tons and bonded ore inventories at alumina refineries at about 57.06 million tons by early 2026, with combined inventories reaching 78.38 million tons. Ample inventory buffers will keep actual market conditions looser than theoretical projections. In summary, if Guinea finalizes its policy to cap total bauxite exports at 150 million tons with no major fluctuations in ocean freight rates, bauxite prices are expected to trend a little bit higher. Nevertheless, substantial overseas alumina surplus and increased substitutable alumina imports will cap upside potential for bauxite prices. Barring unforeseen black swan events, neither bauxite nor alumina prices are likely to replicate the strong rally seen from late 2024 to early 2025. In the short term, both buyers and sellers in the bauxite market are adopting a wait-and-see stance, pending official updates on Guinea’s new policy. Market sentiment remains cautious, and prices are projected to move in a volatile range ahead of clear policy guidance.

In-depth Interpretation & Review of Indonesia’s Aluminum Industry Policies Centering on bauxite and extending to the entire aluminum industrial chain, the Indonesian government has rolled out a series of policies focusing on three core dimensions: volume control, pricing mechanisms, and tax rates. These measures aim to gradually improve the regulatory system, standardize industrial development, and accelerate the transformation from raw ore exports to integrated domestic downstream aluminum production. This article sorts out relevant policy details and their impacts in detail as follows: I. Volume Control: Strengthen Quota Management & Full-process Digital Supervision to Achieve Precise Supply Regulation ① Bauxite Quota: RKAB Approval Cycle Adjusted to Enhance Government Regulation Capacity Regulation Capacity Indonesia standardizes the full-process mining and sales of bauxite across all mines via the RKAB (Mining Work Plan and Budget) system. The core policy adjustment focuses on optimizing the approval cycle, mainly based on Permen ESDM No.17/2025 issued by the Ministry of Energy and Mineral Resources (ESDM) on October 3, 2025. New regulations shall be officially implemented starting from 2026: Approval Cycle Revision: The RKAB approval model for all mining enterprises is changed from once every three years to annual application and annual approval. Mines must submit RKAB applications for the next year between October 1 and November 15 each year, with all approvals completed by the end of the year to guarantee orderly production in the subsequent year. Transition & Application Timeline: In Q1 2026, if the new annual RKAB quota is still under review, the original 2026 quota can be adopted temporarily. Quota adjustment applications for the current year shall be submitted by the end of July annually, while the centralized submission window for the next year’s quota is set from October 1 to November 15, forming a dual management model of annual approval plus dynamic adjustment. Scenario Analysis & Policy Impacts Original Three-Year Approval Model: Unable to accurately forecast market demand for the next two years, this model easily triggers supply-demand mismatches and overall oversupply, putting downward pressure on bauxite prices. It also limits flexible government regulation, resulting in significant policy lag as quotas cannot be adjusted timely in response to market changes. New Annual Approval Model: The government gains stronger annual regulatory authority to dynamically adjust total annual quotas based on international bauxite prices, global supply-demand fundamentals and domestic smelting demand, improving price stability. Meanwhile, it strengthens fiscal revenue guarantees and regulatory efficiency through a more transparent and streamlined approval process, reduces rent-seeking behaviors, and advances compliant industrial development. ② SIMBARA System: Full-chain Digital Supervision to Curb Illegal Mineral Trading In accordance with Perpres 94/2025 (Presidential Regulation No.94/2025), the SIMBARA system (Inter-Ministerial Mineral and Coal Information System) officially incorporated bauxite into its regulatory scope in 2025, establishing a full-process digital supervision system covering operations from mines to end users. Through the SIMBARA official portal, the Indonesian government tracks real-time bauxite sales data and monitors the entire transportation chain from mining to downstream processing, including inter-island logistics, with precise linkage to mining quotas. It covers all key links: mining sites, processing, transportation and exports. The implementation of this system not only aligns Indonesian bauxite mining with global industry standards, but also effectively restrains irregular activities such as illegal mining, child labor and environmental damage, promoting green and compliant development of the sector. All bauxite mines are required to submit full-operation documents via the SIMBARA system, including production reports, inventory statements and raw material procurement records, for joint reviews by four core authorities: the Ministry of Energy and Mineral Resources, Ministry of Industry, Ministry of Trade, and Ministry of Transportation. The mechanism realizes data sharing, joint supervision and full traceability. II. Tax Rate: Standardize Billing Rules & Optimize Tax Burden Structure ① Indonesia’s Bauxite Tax Framework: Fixed Fee + Ad Valorem Royalty The country’s bauxite taxation policy adopts a dual structure of fixed administrative fees and floating royalties, clarifying differentiated charging rules for various mining rights. Combined with revisions to the HPM pricing mechanism, the overall tax burden structure has been optimized. Fixed Fee: Paid in a lump sum on an annual basis Core Formula: Fixed Fee = Mining Concession Area × Corresponding Unit Rate Floating Royalty: Charged per sales transaction and highly linked to commodity prices Core Formula: Royalty = Sales Volume × Transaction Price × Applicable Rate Transaction bonuses and premiums shall be included in invoice amounts for unified tax calculation; Pricing benchmark confirmation: If the premium is negative (actual transaction price benchmark price), tax calculation shall adopt HPM plus premium. Calculation Example Assume HPM = USD 44/ton, bauxite indicators: Al₂O₃=49%, Reactive Silica=2%. Actual transaction price: USD 35/ton (Premium = -9 USD/ton), Bonus = USD 1/ton, net transaction price = USD 36/ton. Given the negative premium, royalty is calculated based on HPM: Royalty = 44 USD/ton × 7% (standard bauxite royalty rate) = 3.08 USD/ton. ② Revised HPM Pricing Mechanism Effective April 15, 2026 (Kepmen ESDM No. 144/2026) Core Revisions: Pricing unit adjusted: Dry Metric Ton (DMT) → Wet Metric Ton (WMT) New deduction factor: Reactive Silica (R-SiO₂) New moisture adjustment clause added Regulators require bauxite enterprises to cooperate with inspection institutions and add key indicators including alumina content, reactive silica and moisture content to official Certificate of Analysis (COA). Data updates on the e-PNBP and MVP systems are also mandated to ensure accurate royalty calculation. The revised HPM mechanism lowers benchmark prices and overall royalty costs, reducing comprehensive bauxite mining costs and accelerating mine shipments as well as downstream industrial integration layouts. ③ Optimized HPM Pricing Cycle: Higher Flexibility to Align with Global Markets The pricing cycle has been shortened to reduce policy lag and better reflect LME aluminum price fluctuations. Old Rules (Before March 1, 2025): Monthly single HPM release. The pricing reference window covered the 20th of the month before last to the 19th of the previous month, with a pricing lag of around 45 days, failing to reflect timely international price changes. New Rules (Effective March 1, 2025): Semi-monthly HPM releases on the 1st and 15th of each month. 1st Issue (1st of each month): Calculated by average LME aluminum spot prices from the 5th to the 25th of the prior month (21-day cycle, 5-day lag); 2nd Issue (15th of each month): Calculated by average LME aluminum spot prices from the 26th of the prior month to the 4th of the current month (10-day cycle, 5-day lag). Core Benefits Improved market sensitivity: The shortened cycle enables HPM to reflect real-time LME movements, strengthens linkage with global pricing, and avoids price distortion caused by long-term average calculations; Optimized revenue management: The government can adjust domestic mineral benchmark prices more precisely in response to global aluminum volatility, balancing reasonable profit margins for mining enterprises and stable national tax revenue. III. Pricing Policy: Abolish HPM Floor Price to Boost Market Circulation & Downstream Development A landmark adjustment in Indonesia’s bauxite price regulation is the cancellation of the mandatory HPM minimum settlement price, implemented in phases to balance fiscal revenue and market vitality. Old Regulation (Kepmen ESDM No.72/2025): Bauxite transaction prices were strictly prohibited from falling below HPM. This rule triggered supply-demand imbalance, sluggish ore sales and suspended shipments by major miners, severely restricting normal market circulation. New Regulation (Kepmen ESDM No.268/2025): Signed on August 8, 2025, and officially implemented in late August 2025. The core revision abolishes the HPM floor price and allows transactions below benchmark prices. Nevertheless, taxes and royalties are still calculated based on standard HPM values to shield national fiscal revenue from price declines. Core Advantages of the Revised Policy Government Perspective: HPM-based tax collection guarantees stable fiscal revenue independent of market fluctuations. Loosened price controls revitalize trading activity, resolve the supply glut dilemma, support mine capacity expansion and local employment, and secure long-term industrial stability. Industrial Perspective: Discounted transactions ease inventory pressure for miners and accelerate capital turnover. Lower raw material procurement costs reduce production expenses for domestic smelters, incentivize downstream capacity commissioning, and help Indonesia achieve its 2040 strategic goal of full aluminum chain integration.

SMM Alumina Morning Comment 2.5 Futures: During the night session, the most-traded alumina futures contract AO2605 opened at 2,824 yuan/mt, reached a high of 2,824 yuan/mt, hit a low of 2,781 yuan/mt, and closed at 2,788 yuan/mt, down 36 yuan/mt from the previous day. Open interest increased by 7,776 lots to 383,000 lots, indicating an overall cautious market sentiment. From a technical perspective, the closing price was above MA10 (2,777.80) and MA30 (2,772.63), providing some upward momentum, but below MA5 (2,792.20), limiting gains with overhead pressure still present. Meanwhile, the MACD indicator DIF (7.18) crossed above DEA (0.19), with the bullish crossover at low levels weakening and the histogram narrowing to 13.96, suggesting alumina futures are expected to continue weakening in the near term. Industry Updates: 1) Overseas alumina transactions: On February 3, 2026, 30,000 mt of alumina was traded overseas at a transaction price of $310/mt FOB Western Australia for March shipment. The previous transaction was on January 20 at $304/mt FOB Western Australia for February shipment. Ore: As of February 4, 2026, the SMM imported bauxite index stood at $62.42/mt, unchanged from the previous trading day. The SMM Guinea FOB average price was $39/mt, unchanged from the previous trading day. The SMM Guinea bauxite CIF average price was $61/mt, unchanged from the previous trading day. The SMM Australian low-temperature bauxite CIF average price was $60/mt, unchanged from the previous trading day. The SMM Australian high-temperature bauxite CIF average price was $56/mt, unchanged from the previous trading day. The Malaysian bauxite CIF average price was $47/mt, unchanged from the previous trading day. The Malaysian bauxite CIF (washed) average price was $60/mt, unchanged from the previous trading day. The Ghanaian bauxite CIF price was $73/mt, unchanged from the previous trading day. The bauxite CFR (Turkey) price was $71.5/mt, down $2/mt from last Friday. Domestic ore side, bauxite production resumptions in Shanxi were active, with currently ample supply. Combined with some domestic ore production lines planning to upgrade to imported ore lines recently, domestic ore demand weakened again, and prices were under pressure. Imported ore side, market transactions were sluggish, with offer prices continuing to decline. Some alumina refineries reported that amid falling ore prices, procurement plans remained cautious. SMM will continue to monitor domestic and overseas mines' production, port shipments, and price trends. Spot Prices: As of February 4, 2025, the SMM alumina index was at 2,619.87 yuan/mt, down 0.27 yuan/mt MoM. The SMM Shandong alumina index was at 2,549.77 yuan/mt, down 0.19 yuan/mt MoM. The SMM Henan alumina index was at 2,617.91 yuan/mt, down 0.92 yuan/mt MoM. The SMM Shanxi alumina index was at 2,604.23 yuan/mt, down 0.26 yuan/mt MoM. The SMM Guizhou alumina index was at 2,693.56 yuan/mt, down 0.23 yuan/mt MoM. The SMM Guangxi alumina index was at 2,674 yuan/mt, down 0.33 yuan/mt MoM. Spot-Futures Price Spread Daily Report: According to SMM data, on February 4, the SMM alumina index was at a discount of 208.13 yuan/mt against the most-traded contract's latest transaction price at 11:30 AM. Warrant Daily Report: On February 4, total registered alumina warrants increased by 6,944 mt from the previous trading day to 196,300 mt. Shandong region alumina warrants remained unchanged at 7,796 mt. Henan region alumina warrants remained unchanged at 1,203 mt. Guangxi region alumina warrants remained unchanged at 7,505 mt. Gansu region alumina warrants remained unchanged at 17,400 mt. Xinjiang region alumina warrants increased by 6,944 mt from the previous trading day to 162,400 mt. Markets Outside China: As of February 4, 2026, the FOB Western Australia alumina price was $310/mt, the ocean freight rate was $20.2/mt, and the USD/CNY selling rate was around 6.95. This translated to a selling price at China's major ports of approximately 2,674.83 yuan/mt, which was 54.96 yuan/mt above the SMM alumina index price. According to SMM model calculations, the import window was closed. Summary: Overall, as of last Thursday, China's alumina market inventory edged up slightly, with the overall oversupply pattern continuing. Currently, some alumina refineries have started maintenance, with enterprises across various regions arranging production shutdowns of different scales, leading to a decline in the industry operating rate and a weekly production decrease of 35,000 mt to 1.636 million mt. Inventory side, as more enterprises underwent maintenance, alumina in-factory inventory decreased by 3,000 mt to 1.2408 million mt. Aluminum enterprises' raw material inventory edged up slightly to 3.603 million mt, mainly due to continued shipments under long-term contract orders. Warrants, attracted by previously strong futures prices, saw increased delivery willingness, rising by 40,000 mt to 159,100 mt, while in-transit and platform inventory decreased by 30,000 mt as cargoes gradually arrived at end-users. Overall, although the pace of inventory buildup has slowed down compared to the earlier period, overall industry inventory pressure persists, and the destocking progress has fallen short of expectations. Going forward, attention should be paid to the execution of enterprise maintenance plans. If the supply side fails to sustain contraction, inventory is expected to maintain a slight buildup trend next week, and spot alumina prices are expected to be in the doldrums. [Data other than publicly available information is derived from public information, market communication, and SMM's internal database models, processed by SMM for reference only and does not constitute decision-making advice.]

[SMM Aluminum Express News] India has approved a broad-gauge rail line linking Tikiri to the Kutrumali and Sijimali bauxite mines in Odisha, boosting upstream logistics for the aluminum sector. The project, granted Special Railway Project status, will be developed under a PPP model with funding support expected from Kalinga Alumina and Vedanta Limited, improving bauxite evacuation and supply chain efficiency.

The Indonesian bauxite market in 2026 is being shaped by three concurrent developments that, when read together, point toward a meaningful and potentially rapid price recovery. Individually, each is significant. Together, they form a self-reinforcing mechanism that the market has not yet fully priced in.

【SMM Port Inventory of Imported Bauxite】According to SMM's statistics on April 24, the total bauxite inventory at ten domestic ports increased by 170,000 mt from the previous week.

[SMM Aluminum Express News] The Indonesian Bauxite Association (ABI) has warned of a potential imbalance between domestic bauxite supply and the rapid expansion of alumina refining capacity. Chairman Ronald Sulistyanto said the association mentioned that annual domestic bauxite supply should ideally not exceed 40 million tons, and alumina production capacity be 12–15 million tons per year (maximum 7 refineries). He noted that 4 alumina refineries are currently operating. The biggest issue, according to Ronald is widespread non-compliance with the Mineral Benchmark Price (HPM) by downstream players, which is hurting upstream miners’ margins. As a solution, ABI is proposing a digital transaction locking system that will automatically block payments if the price falls below the official HPM.

[SMM Aluminum Express News] Canyon Resources has mobilized the surface miner at the Daniel Plateau of its Minim Martap bauxite project in Cameroon. Trial mining operations are scheduled to commence this month (April 2026). First production remains on track for mid-Q2 2026. Upgrade works on the haul road to the Inland Rail Facility (IRF) are progressing as planned. The first seven locomotives were shipped from China at the end of March and are expected to arrive at the Port of Douala in late Q2 2026. The maiden bauxite trial shipment is now scheduled for Q3 2026, with full-scale shipments targeted for Q4 2026. Discussions are ongoing for Canyon to increase its stake in Camrail from 9.1% to over 20%, which would strengthen its control over the mine-to-port logistics chain.

SMM Alumina Morning Comment 4.20 Futures: Last Friday during the night session, the most-traded alumina futures contract 2609 opened at 2,762 yuan/mt, reaching a high of 2,777 yuan/mt and a low of 2,748 yuan/mt, and closed at 2,750 yuan/mt, up 84 yuan/mt from the previous day. Open interest increased by 134,000 lots to 274,000 lots, with continued tug-of-war between bulls and bears. From a technical perspective, the closing price was below MA5 (2,780.4), MA10 (2,790.50), and MA30 (2,938.23), indicating certain overhead resistance for upward moves. Meanwhile, the MACD indicator DEA (-28.37) crossed above DIF (-54.32), with the "death cross continuing" and the histogram at -31.91. Alumina futures are expected to be in the doldrums in the short term, and attention should be paid to geopolitical impacts, commissioning plans for new capacity, and inventory changes. Ore: As of April 15, 2026, the SMM imported bauxite index was at $68.99/mt, up $0.04/mt from the previous trading day. The SMM Guinea FOB average price was at $38.5/mt, flat from the previous trading day. The SMM Guinea bauxite CIF average price was at $69/mt, flat from the previous trading day. The SMM Australian low-temperature bauxite CIF average price was at $61.5/mt, flat from the previous trading day. The SMM Australian high-temperature bauxite CIF average price was at $56.5/mt, flat from the previous trading day. The Malaysia bauxite CIF average price was at $52/mt, flat from the previous trading day. The Malaysia bauxite CIF (washed) average price was at $63/mt, up $0.5/mt from the previous trading day. The Ghana bauxite CIF price was at $78/mt, flat from the previous trading day. The bauxite CFR (Turkey) price was at $81.5/mt, up $3/mt from last Friday. Overall, domestic ore supply remained relatively sufficient, and ore prices were basically stable. For imported ore, amid ocean freight rate fluctuations, some mines controlled shipments, providing certain support for ore prices. However, alumina refinery inventory in China remained at high levels (approximately 92 days), and alumina refineries showed weak purchase willingness, with continued price negotiations between buyers and sellers. Ore prices are expected to fluctuate at highs in the short term, and the market should focus on the implementation of Guinea's "quota system" policy and ocean freight rate trends. Spot Price: As of April 16, 2025, the SMM alumina index was at 2,680.25 yuan/mt, down 13.32 yuan/mt MoM. The SMM Shandong alumina index was at 2,650.82 yuan/mt, down 14.71 yuan/mt MoM. The SMM Henan alumina index was at 2,691.88 yuan/mt, down 16.96 yuan/mt MoM. The SMM Shanxi alumina index was at 2,685.65 yuan/mt, down 26.21 yuan/mt MoM. The SMM Guizhou alumina index was at 2,726.82 yuan/mt, down 13.4 yuan/mt MoM. The SMM Guangxi alumina index was at 2,665.39 yuan/mt, down 13.88 yuan/mt MoM. Spot-Futures Price Spread Daily Report: According to SMM data, on April 16, the SMM alumina index was at a premium of 13.25 yuan/mt against the most-traded contract based on the latest transaction price at 11:30 AM. Warrant Daily Report: On April 16, total registered alumina warrants increased by 4,799 mt from the previous trading day to 478,900 mt. Registered alumina warrants in Shandong remained flat from the previous trading day at 58,375 mt. Registered alumina warrants in Henan increased by 4,795 mt from the previous trading day to 36,322 mt. Registered alumina warrants in Guangxi increased by 4 mt from the previous trading day to 17,434 mt. Registered alumina warrants in Gansu remained flat from the previous trading day at 49,847 mt. Registered alumina warrants in Xinjiang remained flat from the previous trading day at 310,900 mt. Markets Outside China: As of April 16, 2026, the FOB Western Australia alumina price was at $306/mt, the ocean freight rate was at $30.05/mt, and the USD/CNY selling rate was around 6.84. This translated to a selling price at major domestic ports of approximately 2,678.42 yuan/mt, which was 1.83 yuan/mt below the alumina index price. According to the SMM model, the import window remained open. Summary: Supply side, the industry operating rate edged up this week, mainly driven by production resumptions after production line upgrades in Shanxi and continued ramp-up of new capacity in Guangxi. Demand side, aluminum operations remained stable overall, with demand holding steady. Domestic inventory continued the inventory buildup trend this week, with total inventory up 48,000 mt WoW. Overall, the alumina market is still in an inventory buildup cycle, primarily driven by continued supply release coupled with increasing port arrivals and warrant registrations. Looking ahead to next week, as new capacity in Guangxi is further released, supply is expected to maintain growth, inventory is likely to continue accumulating, and prices are expected to remain under pressure. [Data other than publicly available information is derived from public information, market communication, and SMM's internal database models, processed by SMM for reference only and does not constitute decision-making advice.]