It is widely applied in petroleum processing,oil refining ,electricity generated by firepower,textile and otherlight industries ,pharmacy ,pipeline of nature gas,valve etc. A strict QA system has been set up in accordance with ISO9001 for the whole process of our production and we practice a standardized management mode with the microcomputer network management system for all management departments. Since ISO9001 Quality management has been implemented,our level of inspection means and technology has played a leading role in the sector of sealing elements and we have become a member of the science and technology information network of the packing static sealing sector of the state mechanical industry . Besides,we have gained 4 certificates of state patent.