... 9001:2008/SGS test report/ROHS report Stainless steel ball Name: Stainless steel ballsMaterial: AISI304,316,420C,440CSize: 0.8mm- ... iatrical instruments,chemical industry,plastic hard ware,scent bottle sprayer,valve,nail polish,air condition,medical material, ... bearings).OUR MAIN PRODUCTS:Stainless steel ball:AISI302,304,316,420,4440CBearing steel balls:AISIE52100Carbon steel balls:AISI1010,1015,1045, ...