Mechnical Seals & Seal Materials, Ceramic Bush, Bearing and Pump Part, Bulletproof Ceramic, Bullet-Proof Product, Alumina, Silicon Carbide, Silicon Nitride, Zirconia, Tugsten Carbide, Carbon, Boron Carbide，Metal, Industrial Ceramic, Special Ceramic-YOUBI SHENG (Ningbo) Industrial Technology Co., Ltd.

Advanced Ceramic and Industrial New Material

Alumina, Silicon Carbide, Silicon Nitride, Zirconia, Tugsten Carbide, Carbon, Boron Carbide，Metal