Purchase Qty. Reference FOB Price
1-99 Pieces US$0.10
100+ Pieces US$0.09
Product Description
China manufacturer of high precision ceramic balls (silicon nitride ball -Si3N4 ball) 5.5mm for ball bearing and ball screw Si3N4 is a new kind of bearing material with several good features, it possesses high temperature resistance, corrosion resistance, insulation, non-magnetism, high strength, ...