... ok punching1. Experience: Over ten years experience in metal stamping parts which cover more than 7000 square meters.2. Certificate: ... , welding, Bending, sheet metal fabrication, and metal assembly. etc.5. Surface treatment: nickel plating, zinc plating, color zinc plating, ... , mutual inductor, relay, sound, car GPS, Car chargers, ships, home appliances etc.7. Production: We can supply more than 10 ...