[Materials] Equivalent to SWCH, Equivalent to SUS307J3
[Surface treatment] None, trivalent chromate, 8-micron trivalent white, trivalent black, trivalent white, bright chromate plating, hot dip galvanized, chromate plating, green chromate, black chromate, nickel plating, chrome plating, Parkerizing, Dacrotized, stainless steel coating, trivalent stainless steel coating, German brown plating, black paint