Ceramic Balls, Ceramic Bearings, Thin Section Bearings manufacturer / supplier in China, offering High-Temp Si3n4 Ceramic Balls Silicon Nitride Ceramic Balls for Bearing 31.75mm G20 EUR&USA, Industrial Grade Silicon Nitride Ceramic Ball 28.575mm EUR&USA, Precision Si3n4 Ceramic Balls for Bearings 17.4625mm (+1) 17.5mm EUR&USA and so on.