... :ISO 9001:2008/SGS test report/ROHS report Stainless steel ball Name: Stainless steel ballsMaterial: AISI304,316,420C,440CSize: 0 ... market,it can be used in iatrical instruments,chemical industry,plastic hard ware,scent bottle sprayer,valve,nail polish,air ... (valves, pumps and bearings).OUR MAIN PRODUCTS:Stainless steel ball:AISI302,304,316,420,4440CBearing steel balls:AISIE52100Carbon steel balls ...