... brass,copper etc. certification:ASTM we supply OEM product of customer's requset Metal Stamping Product Features:1)OEM ... lathes etc.6)Quality garantee of ISO 9001stamped metal parts1,It is product of metal punching/stamping2,We get certificationISO9001, good ... We have more than 100 pcs machines( including mache,grind,punching,milling,injection machine,shearing machine , welding machine, bending machine ...