- ACI Trading Limited
- Agrofert Holding
- Ahlstrom-Munksjö
- Akzo Nobel
- Alkane Resources
- Alloy Resources Limited
- Alteo
- Amex Resources Limited
- Amigo Minerals JSC
- Ampacet Corporation
- AMR Constructions Ltd
- Arcolor AG
- Argex Titanium Inc.
- Arrium Mining
- Aryana Industrial Process & Technology Co. Ltd.
- Ashland Inc.
- Asian Paints Ltd
- Astra Exploration Ltd
- Astro Resources NL
- Astron Limited
- ATI Speciality Alloys & Components
- ATI Wah Chang
- Atlantic Vanadium Pty Ltd
- Atlas Tin SAS
- Aurora Minerals Ltd
- Australian Abrasive Minerals Pty Ltd
- Australian Garnet Pty Ltd
- Australian Ilmenite Resources Pty Ltd
- Australian Strategic Materials Ltd
- Australian Titanium Pty Ltd
- Australian Zircon NL
- Australian Zirconia Ltd
- Avertana Ltd
- Axalta Coating Systems LLC
- Axiall Corporation
- Bang Huu Minerals Joint Stock Company
- Baosteel Resources International Co Ltd
- Barrytown JV Limited
- Base Resources Ltd
- BASF AG Ludwigshafen
- Bayer
- BEHR Process Corporation
- Bemax Resources Limited
- Benjamin Moore Paints
- BHP
- Blackrock Metals
- Bluejay Mining Plc
- BlueScope Steel
- Bollwerk Finanzierungs–und Industriemanagement AG
- Broken Hill Minerals
- Calyx Resources Ltd
- Casaforte Investimentos
- CCC Plastics
- Ceylon Steel Corporation Limited
- Chilches Materials SA
- ChTi
- CIC Resources
- CINKARNA, Metalurško-kemična Industrija Celje, d.d.
- CITIC Resources Australia Pty Ltd
- CITIC Titanium Industry Co., Ltd.
- Clariant Masterbatches
- Clariant Plastics & Coatings
- Classic Minerals Ltd
- Cochin Minerals and Rutile Limited
- Cofermin Rohstoffe GmbH
- Colortech, Inc.
- Contran Corporation
- Cosmo Chemical Co Ltd
- Crenox GmbH
- Crimea Titan Private Joint-Stock Co.
- Cristal Global
- Cronus Minerals Limitada
- Crossland Strategic Metals Limited
- DCW Limited
- Deutsche Amphibolin-Werke von Robert Murj
- Diatreme Resources Limited
- Donald Mineral Sands Pty Ltd
- Doral Mineral Sands Pty Ltd
- Dow Coating Materials
- Dulux Group
- DZS, založništvo in trgovina, d.d.
- E I Dupont de Nemours & Co
- Eggerding Industrial Minerals B.V.
- Endeka Ceramics Pty Ltd
- Environmental Resources Management Ltd
- Eramet Titanium & Iron AS
- ESKOM
- EuroChem Trading GmbH
- Europe Minerals BV
- Exxaro Resources Limited
- FinnAust Mining Plc
- Flint Hill Resources
- Forge Resources Ltd
- Fortescue Metal Group
- Georgia Gulf Corporation
- Global Advanced Metals
- Global Nuclear Fuel
- GMA Garnet Pty Ltd
- Golden Rim Resources
- Goodnews Bay Platinum Project
- Goondicum Resources
- Grande Côte Operations SA
- Great Southern Sands
- Grupa Azoty Zaklady Chemiczne Police SA
- Guangxi Cava
- Guild CPO
- Gunson Resources Limited
- Ha Tinh Minerals & Trading Corporation
- Hainan Wensheng Minerals Co., Ltd
- HATCH Africa (Pty) Ltd
- Helmut Kreutz Mahlwerke GmbH
- Holland Colours B.V.
- Huntsman Pigments
- IAMGOLD Corporation
- IHC Mining B.V.
- Iluka Resources Limited
- Image Resources NL
- Imerys
- Indian Rare Earths Limited
- Industrial Minerals Corporation
- Industrie Bitossi S.p.A.
- INEOS Pigments USA, Inc.
- INEOS Styrolution Group
- IRC Limited
- Ishihara Sangyo Kaisha
- Iwatani Corporation
- Japan Oil, Gas & Metals National Corp
- Jiangsu GPRO International
- Jotun A/S
- Kahnooj Iran
- Kalbar Resources Ltd
- KanAzin Consulting Engineering Co.
- Kenmare Resources Plc
- KEPCO Nuclear Fuel
- Keysbrook Leucoxene Pty Ltd
- Kronos International Inc
- Kronos Worldwide Inc
- Largo Resources Ltd (Vanádio de Maracás S/A)
- Lomon Billions
- Luxfer MEL Technologies
- Macallum Group
- MacMines Austasia
- Madagascar Minerals Fields Ltd
- Madagascar Resources
- Manildra Group
- Mario Pilato Blat S.A.
- Marubeni Corporation
- Matilda Zircon Limited
- MCD Limited
- Meiwa Corporation
- Melior Resources
- Meridian FSU Ltd
- Metalysis Limited
- Midwest Vanadium Pty Ltd
- Millenium Inorganic Chemicals
- Minchem Ltd
- Minera Las Cautivas, S.A. de C.V
- Mineração Santa Elina S.A.
- Mineração Floresta S.A.
- Mineração Taboca S.A.
- Mineral Commodities Limited
- Mineral Deposits Ltd
- Mineral Sands Resources Pty Ltd
- Mineral Technologies Pty Ltd
- Minrite Pty Ltd
- Mitsui & Co Ltd
- MMG Ltd
- Mota-Engil
- Munksjö Germany Holding GmbH
- Murray Zircon Pty Ltd
- MZI Resources Ltd
- Na Trans Eqypt
- Neometals Ltd
- New Zealand Steel Ltd
- Nissei Kyoeki Co., Ltd.
- Nordic Mining
- Nyanza Light Metals
- Olin Corporation
- Oman Oil Company
- Omya International AG
- Oregon Resources Corporation
- Oresome Australia Pty Ltd
- Osaka Titanium Technologies Co., Ltd.
- Ostchem International GmbH
- Outotec GmbH
- Oxbow Carbon and Minerals LLC
- Pangang Group Titanium Industry Co Ltd
- Pangea (Pty) Ltd
- Panzhihua Iron & Steel (Group) Co.
- Panzhihua ZTi
- Panzhihua ZTi Science & Technology
- Pathfinder Minerals
- Perryman Company
- Phillips 66 Company
- Pilbara Iron Company (Services) Pty Ltd
- Plastiblends India Limited
- Polyone Corporation
- POSCO
- PPG Industries, Inc.
- Praxair Inc.
- Precheza a.s.
- Premier Minerals Limited
- Prenax Pty Ltd
- RAIN CII Carbon LLC
- Rasa Corporation
- Rayonier Inc.
- Relentless Resources Limited
- Richards Bay Minerals
- RICO - Tanwen LTD
- Rio Grande Mineração SA
- Rio Tinto Iron & Titanium
- Rio Tinto QMM
- RMM Capital Pty Ltd
- RMR Holdings, LLC
- Rocktenn
- Rutila Resources Ltd
- SABIC Petrochemicals BV
- Sachtleben Chemie GmbH
- Saigon Quy Nhon Mining Corporation
- Saint Gobain SEPR
- Saraf Agencies Private Limited
- Savannah Resources Plc
- Servicios Administrativos Trebol S.A. de C.V.
- Sheffield Resources Ltd
- Sherwin-Williams
- Shinsho Corporation
- Shoalhaven Starches
- Sibelco Australia Limited
- Sichuan Lomon Titanium Industry
- Sierra Rutile Limited
- Sojitz Corporation
- SONGWON Industrial Group
- South Africa Jin Chuan Resources (Pty) Ltd
- Southern Ionics Incorporated
- Sovereign Metals Limited
- Sovereign Resources Ltd
- Specialty Aluminas
- Specialty Metals Company SA
- Strandline Resources Ltd
- Strategic Energy Resources Ltd
- Sumitomo Corporation
- Supreme Resources Inc
- Tazetta Resources Lda
- Teknos Group Oy
- Tennant Metallurgical Group Ltd
- Thani Emirates Resources Holdings Ltd
- The Boeing Company
- The Chemours Company
- The Dow Chemical Company
- The Kerala Minerals and Metals Limited
- Tianqi Lithium Australia Pty Ltd
- Tikkurila Oyj
- TIMET
- Tinfos Titan & Iron AS
- Tioxide Europe Limited
- Tirus International SA
- Titan Ukraine
- Titanium Corporation Inc
- Titanium Investments LLC
- Titanium Resources Group SL
- Titanium Sands Ltd
- TiZir Limited
- Toho Titanium Co., Ltd.
- Tolexis International Limited
- Trafalgar International F. Z.E.
- Transalloys (Pty) Ltd
- Trebol
- Treibacher Schleifmittel AG
- Trimex Sands Private Limited
- Triton Minerals Ltd
- Tronox Inc
- Twin Pines Minerals LLC
- TYM Co Ltd
- UBS
- UMIN - Ukraine Minerals
- Unimin Australia Limited
- United Mining and Chemical Company
- Vale S.A.
- Valspar Corporation
- Velta Trading LLC
- Venator Materials Plc
- VHM Limited
- Vimy Resources Ltd
- Vital Metals Ltd
- VSMPO - AVISMA Corp
- Wensheng Advanced Materials (Hong Kong) Co., Ltd
- Westinghouse Electric Company
- Westlake Chemical Corp.
- WestRock Shared Services, LLC
- WGI Heavy Minerals Inc.
- White Mountain Titanium Corporation
- Wogen Group Limited
- World Titanium Resources
- WPG Resources Ltd
- Xingtai Ningshuo Plastic Chemical Dist. Co.
- Yasheya Limited
- Y-Carbon
- Yingkou Astron Minerals Resources Co., Ltd
- Yunnan Xinli Non Ferrous Metals Co Ltd
- Zaklady Chemiczne Police
- ZaNGaS Hoch - und Tiefbau GmbH
- Zirco Resources Ltd
- Zircon Industry Association