Silicon Oxide | Aluminum Oxide | Magnesium Oxide |
Titanium Oxide | Zirconium Oxide |
3M | Astro Met Inc. | Ceradyne Advanced Ceramics |
Esstech | Gouda Vuurvast | International Ceramic Engineering |
NAPCO | Potters Industries | Sapco |
Schott North America | Sharadaa Ceramics | Von Roll Isola |