1. Cutting

Process: large sheet → cutting board according to MI requirements → edging → unloading

2. Drilling

Process: stacked board pin → upper board → drilling → lower board → inspection

3. sink copper

Process: rough grinding → hanging board → automatic copper sinking line → lower board → dip 1% dilute H2SO4 → thickened copper

4. graphics transfer

Process: (blue oil process): grinding plate→printing the first side→drying→printing the second side→drying→explosion→printing→inspection; (dry film process): lamination→standstill→alignment→exposure →Standing→Printing→Inspection

5. graphic plating

Board → degreasing → washing twice → micro-etching → washing → pickling → copper plating → washing → pickling → tin plating → washing → lower board

6. remove the film

Process: release board → pass machine

7. etching

Process: Use chemical reaction to corrode the copper layer of non-circuit parts.

8. green oil

Process: grinding plate→printing photosensitive green oil→curium plate→exposure→exposure; grinding plate→printing the first side→drying plate→printing the second side→drying plate

9. characters

Process: After the green oil finishes → cool and stand → adjust the screen → print characters → rear curium

10. gold-plated fingers

Process: upper plate → degreasing → washing twice → micro-etching → washing twice → pickling → copper plating → washing → nickel plating → washing → gold plating

11. tin plate

Process: micro-erosion → air drying → preheating → rosin coating → solder coating → hot air leveling → air cooling → washing and air drying

12. Forming

Process: die stamping or CNC gong machine gong to produce the shape required by the customer. Organic gong, beer board, hand gong, hand cutting

13. Test

Process: upper mold → release board → test → qualified → FQC visual inspection → unqualified → repair → return test → OK → REJ → scrap

14. Final inspection

Process: Incoming material → view information → visual inspection → qualified → FQA spot check → qualified → packaging → unqualified → processing → inspection OK