working procedure
-Pore formation: 1. Numerical control drilling
2. Beer Cave
-Image transmission: 1. silk-screen printing
2. Dry film
-Perforated copper: 1. Chemical copper.
2. Electroplating copper
-solder resist ink: 1. Screen printing.
2. Photosensitivity
-Surface treatment: 1. resin
2. Anti-oxidation
3. Silver/carbon oil connecting bridge
4. Silver/carbon oil injection hole
5. White printing
Tin spraying
(add lead-free HAL)
7. electrolytic nickel/Kim
8. Nickel/gold precipitation
9. Goldfinger
-External processing: 1. Inclined edge cutting
2. Computer Gong
3.v-shaped incision
4. Die dropping