... aluminum, Titanium alloy steel, agate, glass, ceramic, Carbon steel, Chrome steel etc.Surface TreatmentZn-plating, Ni-plating, Cr-plating, Tin ... with industry and trade integrationMain ProductsGrinding Steel Ball, Mild Steel Ball, Casting Steel Ball, Ball Bearing, Valve Ball etc.Producing EquipmentCNC machine SHENGYU & SYX42, ... our website: http://gdsx.en.alibaba.com Steel ball ,grinding media stell ...