1. Calderys
2. Chosun Refractories Co. Ltd.
3. Gita Refractories
4. HarbisonWalker International
5. KT Refractories
6. Lanexis
7. Magnezit Group
8. Mayerton
9. Puyang Refractories Group
10. Qinghua Refractories Co. Ltd.
11. Ravani Ceramics
12. Refratechnik Holding GmbH
13. Resco Products
14. RHI Magnesita
15. RS Kiln Refractory Company
16. Ruitai Materials Technology
17. Shinagawa Refractories
18. Vesuvius