Solar
Materials

| Oxides |
| Sponsor Companies | |||
| Name | Region | No.Staff | Material Types |
| American Elements | USA | Zinc oxide | |
| Avaluxe International | Germany | Zinc oxide | |
| China Tin Group | China | 11,000 | Tin oxide, Zinc oxide |
| Dowa Holdings | Japan | 5000 | Zinc oxide |
| Electro Abrasives | USA | Tin oxide | |
| Gemch | China | 80 | Zinc oxide |
| GfE Fremat GmbH | Germany | Zinc oxide | |
| Indium Corporation | USA | Tin oxide | |
| International Tin srl | Italy | Tin oxide | |
| Jinrun Non-ferrous Metals | China | Tin oxide | |
| Keeling & Walker | UK | Tin oxide | |
| Mountain Technical | China | Zinc oxide | |
| Nippon Rare Metal | Japan | Tin oxide | |
| PPM Pure Metals | Germany | Zinc oxide | |
| ProTech Materials | USA | Zinc oxide | |
| The Metal Powder | India | Zinc oxide | |
| Vacuum Engineering & Materials | USA | Zinc oxide | |
| Yunnan Tin Group | China | 30,000 | Tin oxide |