Supply chain
The main raw material brands and manufacturers
| Main raw material | Detailed information |
| CCL | Guangdong Shengyi |
| Iteq sheet | |
| Isola | |
| Copper foil | Mitsui |
| Changchun Taiwan | |
| Shandong Campbell | |
| PP (semi cured film) | Guangzhou Hong Ren |
| Guangdong Shengyi | |
| printing ink | Industrial Alliance |
| BST chemical | |
| Huizhou green. | |
| Guangxin | |
| Chemical raw materials | MacDermid chemical |
| Roman Haas | |
| Copper ball | Cheng'an copper |
| Tin | Nan Sheng Technology |
