- AMG Advanced Metallurgical Group
- Alliance Mineral Assets Limited
- China Minmetals Corporation
- Ethiopian Mineral Development Share Company
- Eurotrade International SA
- Global Advanced Metals Pty Ltd
- Jiangxi Tungsten Holding Group Co.Ltd (China)
- Minsur
- Ningxia Orient Tantalum Industry Co. Ltd. (PROCESSING COMPANY)
- Pilbara Minerals
- Piran Resources Limited
- Tantalex Resources Corp.