|
Main raw material |
Contract |
| FR4 CCL | Jian Tao (KB) |
|
GDM |
|
|
Ink |
ABQ (Jiang men) |
|
RONGDA |
|
|
Taiyo |
|
|
Chemical raw materials |
Zhengtianwei Technologies |
| Copper |
Tongsheng Copp industrial |