... on quenching, surface treatment/rust-proof treatmentType: A/B series, simplex, duplex, triplexMaterial: Q235, Steel 1045, stainless steel, 40Cr, 20CrMnTi, 42CrMo, copper ... :Shimenqiao Junying Development Zone,Renqiu City,Hebei province,ChinaZip:062556 Simplex Sprocket Duplex Sprocket Triplex Sprocket Stock PackageIndividual Plastic Bag Plus Carton ...