stamping die part 1.Material:copper alloy 2.thickness:0.3mm 3. ... conventional metal stamping, progressive stamping, deep drawing, welding, spot welding, tapping, polishing, and assembly, complying with customers’ drawings.We have more ... Conventional metal stamping, progressive stamping, deep drawing, welding, spot welding, tapping, polishing, and assembly,,according to customers' drawings or samples.3 ...