China Good-Performance DIN/ANSI/JIS Standard Sprockets Industrial Gear Teeth Rack Bevel Stainless Transmission Drive Part Carbon Steel Roller Chain Sprocket manufacturer

Item Description  Merchandise DescriptionHeat remedyHarden tooth, tempering, quechingSurface treatmentzinc plated, blacken, phopharization, carborizedProcessForging( casting)—lathe- teeth shaping—finishing—oil washing—Packing ,manufactured by...