... factory,pcb assembly,rigid pcb past UL,ISO9001,ISO14001,ROHS. circuit electronic ,pcb assembly,pcb board,rigid pcbOur product developed most ... mask color: green/yellow/black/white/red/blue10)Inner packing: Vacuum packing / Plastic bagOuter packing: Standard carton packing11) Hole tolerance: PTH ... , Routing, V-CUT, Beveling14) Provides OEM services to all sorts of printed circuit board assembly