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