Zhengzhou Huashuo precise porcelain company was founded in the year of 2001. Undertake the research? exploitation?production and sale of the pressureless sintering silicon carbide material series production, specially the seal-ring? The pressureless sintering silicon carbide is a new high-technology porcelain?SiC also has the advantage of high hardness?high strength?highly resistant to corrosion and high temperature resistant. The pressureless sintering silicon carbide seals have been widely used in mechanic?chemical industry?paper making?oil refining and so on, for its light weight?high strength?high temperature resistance and high shock resistance, allow armor plate?nozzle and the others military industry field. The consequence of several years apply showing, the variety of capability of the pressureless sintering silicon carbide is more advanced than other industry ceramic, such as alumina? tungsten carbide and reaction bonded silicon carbide. So it could replace these products. Huashuo is one of professional companies that produce the pressureless sintering silicon carbide in the East Asia. HuaShuo produces its complete set technique from the spray dried silicon carbide powder to the forming working components. It currently manufactures seal blanks and finish seals of DIN24960 standard. We also accept orders according to customers requirements. The properties of the products are getting or exceed the stander of ESK and Carborundum. Our products export to north American?Europe and Taiwan area.