... )ISO 9001 certified Thickness0.4mm ~12mmEquipment5~250 tons punching machines, bending machine, cutting machine, welding machine, polish machine, grinding machine etcMaterialsteel, stainless ... steel, aluminum (according to customer's requirement)ProcessStamping, deep drawing, bending, punching, threading, welding, tapping, riveting, grindingSurface treatmentpolishing, chrome/zinc/nickel ...