... in OEM manufacturer 3.No burr, no scratch Item:Steel Sheet Metal Stamping case/boxDescription:1. Material: stainless ... steel. Iron (SPCC, SECC, SPTE, tinplate),Q235 steel, HRB335,304,402,202 steel or as your requirement;2 ... on time delivery. we have the employees more than 400.Steel Sheet Metal Stamping case/box carbon steel stamping metal joint pallet hinges