... and OEM service 4.High QC standar Hot sales precision metal stamping part Specifications1.for ... Zinc plating, enamel, hot-dip, polishing, hardening clear anodizing, chrome plating, nickel plating, zinc plating, oil injection, black oxide ... coating and so onmaterialstainless steel, iron ( SPCC, SECC, SPTE, tinplate), aluminum alloy, red copper,brass, bronze finish Zinc/nickel/chrome plating, hot ...