- 海北Drum packing machine
- 海北Linear electrochemical copper plating
- 海北High speed copper plating
- 海北Steel brush machine
- 海北Belt sander
- 海北High frequency dryer
- 海北Electric control programming and distribution panel
- 海北Wire drawing machine
- 海北Flux cored wire
- 海北Robot equipment debugging
- 海北Waste gas treatment
- 海北Precision layer winding machine
