•Silicon nitride（Si3N4）、pressureless sintered silicon carbide（SSiC）、Zirconia（ZrO2）ball bearings/balls
•Pressureless sintered silicon carbide（SSIC）parts applied in chemical pump/valve area
•Silicon nitride（Si3N4）、Sialon/Syalon parts applied in aluminium foundry & casting
•Various ceramic structural parts
Rare-earth ceramic bearings have many outstanding advantages, resistant to strong acid , strong alkali, salt … other corrosion, elevated temperature, and wear. Light structure weight, high limit speed, low noise, electric insulation, stable dimension at elevated temperature, small starting torque etc. They ’ re able to work under the poor lubrication condition, have longtime working life, can be widely used in aviation, aerospace, navigation, petroleum, chemical industry, machinery, automobile, locomotive, metallurgy, electronics, light textile, pump, pharmacy, food machinery, medical machinery, national defense and military technology … They ’ re new materials and hi-tech products have big society and economic benefit.