Stainless Steel Ball, Carbon Steel Ball, Bearing Steel Ball manufacturer / supplier in China, offering Stainless Steel Solid Balls 2– 20 mm Widely Used in Valves, Bearings, Nozzles, Precision Steel Balls 8-12mm High Roundness and Strong Pressure Resistance Suitable for Automotive Machinery, High-Precision Bearing Steel Balls 3mm– 6mm Gcr15 Material Hot-Selling Products for Electronic Motors and so on.