Raw materials management
Main original material brand and manufacturer
| Main raw materials | manufacturer |
| Covered copper board | GuangDong Sheng Yi |
| Jinan International | |
| Isola Asia Pacific | |
| Copper foil | Mitsui Kinzoku |
| Taiwan Changchun | |
| Shangdong Jinbao | |
| PPPP(Half) | Guangzhou Hongren |
| GuangDong Sheng YI | |
| Ink | Lianhe Industrial |
| Bst Chemical | |
| Greencure(Huizhou) | |
| Kuangshun | |
| Chemical raw materials | MacDermid Chemical |
| Rohm and Haas | |
| Copper ball | Chengan Copper Industry |
| Tin bar | Sheng Nan Technology |