... , Mo, 9Cr18,3Cr13, stainless steel, SUS201/304/316,Copper, aluminum, Titanium alloy steel, agate, glass, ceramic, Carbon steel, Chrome steel etc.Surface TreatmentZn-plating, Ni ... CNC/AUTO lathe, springs, shafts, screws, stamping parts and other metal parts. Our main production modes are designing and proofing based ... BV certificate,and we hope to cooperate with you . Small Low Carbon Steel Balls