... stamping die part 1.Material:copper alloy 2.thickness:0.3mm 3.Tolerance:0.1mm 4.RoHS compliance Production Range:In stamping ... insulation fiber plates. Production range from conventional metal stamping, progressive stamping, deep drawing, welding, spot welding, tapping, ... Cutting machines,EDM Machines.2).Process:Conventional metal stamping, progressive stamping, deep drawing, welding, spot welding, ...