... 3.different spec earphone mesh :stamping and etching process ,low cost ,different spec and design as required by yousheet metal components ... steel, copper, silicon steel plate, aluminum, nickel, magnetic material and so on.Product thickness 0.03mm—1.5mmProduct size 1 ... width is 0.025mm.Product precision is ± 0.01mm (common difference). Its generally 20% of material thickness.We also provide imported ...