... 3.No burr, no scratch Item:Steel Sheet Metal Stamping case/boxDescription:1. Material: stainless steel. Iron (SPCC, SECC, SPTE, tinplate ... ,welding,deep drawing and Sheet Metal Fabrication;3. Surface treatment: powder coating, chrome plating, zinc plating, mirror polished, silk printing, or ... have the employees more than 400.Steel Sheet Metal Stamping case/box Steel Sheet Metal Stamping ...