... , A390, ADC14, Aluminium alloy, steel alloy, 1045 steel, sus304, 45cr, 40cr, 38crsi, Magnesium alloy, etc.Surface treatmentNickel plating, zinc coating, chrome ... , aluminum alloy, brass and bronze alloy), 1045 steel, sus304, 45cr, 40cr, 38crsi 2.All kinds of surface treatments: polishing, zinc plating ...