Antimony producing companies sit at the centre of one of the most geopolitically sensitive supply chains in critical minerals. With China’s 2024 export ban on antimony shipments to the US still in force and global output falling from 153,000 metric tons in 2020 to roughly 110,000 metric tons in 2025, the corporate entities that mine, smelt and refine antimony now carry outsized strategic weight for defence, semiconductor and flame-retardant supply chains. This list ranks the ten companies with the greatest influence over global antimony supply, from primary miners to downstream chemical processors. For current spot rates, see CMN’s antimony price tracker, and for background on the metal’s applications and supply risk, see What Is Antimony?
How We Ranked the Top 10 Antimony Producing Companies
Antimony producing companies were ranked primarily by mine output and processing capacity, drawing on USGS Mineral Commodity Summary data, company disclosures and industry reporting. Primary miners — operators of stibnite deposits and antimony-bearing ore bodies — are ranked ahead of pure downstream processors, since mined tonnage is the foundation of the supply chain. Where production figures are not publicly disclosed (common among Chinese state-linked entities), qualitative market position and known processing capacity were used as a secondary measure. Companies that primarily refine or recycle antimony trioxide rather than mine ore are listed separately at the lower end of the ranking, reflecting their different position in the value chain.
1. Hsikwangshan Twinkling Star Co. Ltd (China)
Hsikwangshan Twinkling Star operates the Xikuangshan mine in Hunan province — the largest known antimony deposit in the world. The operation produces approximately 30,000 metric tons of refined antimony annually, making it the single largest antimony-producing asset on the planet and the anchor of China’s dominance in global supply. China alone accounted for roughly 36% of 2025 global mine output, and Xikuangshan represents the majority of that volume.
2. Hunan Gold Group (China)
Hunan Gold Group is among the largest publicly disclosed antimony enterprises by revenue, processing substantial volumes of refined antimony metal and antimony trioxide for both domestic and export markets. The group’s scale and integration across mining and downstream chemical production give it significant influence over Chinese antimony pricing and availability.
3. Guangxi China Tin Group (China)
Guangxi China Tin Group is part of a consortium reported to contribute more than 80% of China’s aggregate domestic antimony mining output. Its scale illustrates how concentrated Chinese production really is — a small number of large state-linked groups, rather than many independent miners, control the bulk of national supply.
4. Yiyang City Huachang Antimony Industry (China)
Yiyang City Huachang Antimony Industry runs one of China’s larger multi-variety smelting operations, processing antimony ore into a range of metal and chemical products. The company’s consistency of output has made it a reliable counterparty for buyers seeking refined antimony products beyond raw concentrate.
5. Yunnan Muli Antimony Industry Co. Ltd (China)
Yunnan Muli Antimony Industry maintains close commercial ties with Asia’s electronics manufacturing base, supplying antimony trioxide and related compounds used in flame-retardant formulations. Its specialisation in this downstream niche makes it an important link between Chinese mine supply and regional electronics production.
6. Guizhou Provincial Metals and Minerals I/E Co. / JIEFU Corp (China)
This trading and manufacturing group exports antimony ingots and flame-retardant masterbatches to international buyers, acting as one of China’s more visible antimony export channels for Western importers seeking refined product rather than raw ore.
7. Alkane Resources (Australia)
Alkane Resources owns the Costerfield gold-antimony mine in Victoria following its 2025 merger with Mandalay Resources, which previously operated the site. Costerfield produced 763 metric tons of antimony in 2025, modest by Chinese standards but strategically significant as one of the few Western-jurisdiction antimony mines feeding non-Chinese supply chains. Australia’s broader antimony reserves of 110,000 metric tons leave room for further Western expansion.
8. United States Antimony Corporation (USAC)
United States Antimony Corporation operates the only dedicated antimony processing facility in the US, based in Thompson Falls, Montana. In 2026 the company disclosed its role funding a hydrometallurgical antimony facility in Bolivia that expanded processing capacity fifteenfold, with output shipped directly to the Montana smelter — a rare example of a vertically integrated non-Chinese antimony supply chain reaching from South American mine output to US-based refining.
9. Campine NV (Belgium)
Campine is a European specialist in antimony trioxide chemicals and the recycling of antimony-bearing scrap metal. Rather than mining ore, Campine processes secondary and recycled feedstock, giving European flame-retardant and battery manufacturers a non-Chinese chemical supply option.
10. AMG Advanced Metallurgical Group (Netherlands)
AMG Advanced Metallurgical Group is a diversified critical materials company with processing infrastructure spanning several specialty metals, including antimony-adjacent chemical production. Its position reflects the broader trend of Western critical minerals companies building processing capacity to reduce reliance on Chinese-refined antimony products.
The Outlook for Antimony Producing Companies in 2026
The outlook for antimony producing companies in 2026 is shaped almost entirely by China’s continued export restrictions and the slow build-out of non-Chinese capacity. Chinese groups — Hsikwangshan Twinkling Star, Hunan Gold Group, Guangxi China Tin Group and others — remain dominant in raw tonnage, but Western governments are actively funding alternatives: Australia’s AU$1.2 billion critical mineral reserve announcement in January 2026, US government support for Idaho’s Stibnite project, and USAC’s Bolivia-to-Montana supply chain all point toward a gradual diversification. For buyers and investors tracking the sector, China’s export control policy remains the single largest variable in antimony availability and price. See further coverage in CMN’s Top 10 Tungsten Producing Companies for a comparable defence-critical metal supply chain.
Antimony reserve and production data referenced above are drawn from the USGS 2026 Mineral Commodity Summary. For authoritative reserve and production figures by country, see the USGS Mineral Commodity Summaries. For background on Western critical minerals policy responses, see the Australian Critical Minerals List.
This article is for informational purposes only and does not constitute investment advice.
Who are the largest antimony producing companies in the world?
The largest antimony producing companies are concentrated in China, led by Hsikwangshan Twinkling Star, which operates the Xikuangshan mine — the world’s largest known antimony deposit, producing around 30,000 metric tons per year. Other major Chinese groups include Hunan Gold Group and Guangxi China Tin Group.
Are there any antimony producing companies outside China?
Yes. Alkane Resources operates the Costerfield mine in Australia, United States Antimony Corporation runs the only dedicated processing facility in the US, and European firms Campine NV and AMG Advanced Metallurgical Group process antimony chemicals and recycled feedstock outside China.
Why are antimony producing companies attracting investor attention in 2026?
China’s 2024 export ban on antimony shipments to the US, combined with the metal’s role in ammunition, semiconductors and flame retardants, has made antimony supply a defence and economic security priority, driving government funding into non-Chinese producers.
Does China control most antimony supply?
Yes. China accounted for roughly 36% of global antimony mine production in 2025 and holds the world’s largest reserves at 830,000 metric tons, giving Chinese antimony producing companies outsized influence over global pricing and availability.
What is the current antimony price?
Antimony prices have risen sharply since China’s 2024 export restrictions. Current spot rates and historical trends are tracked on CMN’s antimony price page.
Which antimony producing companies are publicly traded?
Publicly traded antimony-linked companies include United States Antimony Corporation (NYSEAMERICAN:UAMY), Alkane Resources (ASX:ALK, TSX:ALK), and AMG Advanced Metallurgical Group.
