NOC (NINGBO OCEAN FINE CERANICS TECHNOLOGY CO.,LTD.IN CHINA).We are the specialist manufacturer of the mechanical seals and the seal materials such as Silicon Carbide,Tungsten Carbide,Carbon and Ceramics.We are the sole supplier of the Eagle Industry Co.,Ltd(NOK Group Company,Japan)for Silicon Carbide.Our Products are made under the leading of the Japanese experts,they are high technical products with strict quality system.