Our company covers an area of 150, 000 m2 with a total assets of 250 million Yuan. There are 360 staff members including 80 technicians in our company. We also establish an effective complete quality control system. In 2006, our company obtained the certificate of ISO9001 Quality System Authentification, Certificate of the EU PED-97-23-EC Quality Management System in 2008 and it started to run in accordance with API 5L in 2009. Our company is equipped with sophisticated manufacturing and testing equipments, and a complete testing system has been established which includes advanced testing equipments, such as X-ray detector, ultrasonic wave detector, hydrostatic tester, tension tester, metallurgical analyzer and physical & chemical lab, etc. These equipments and technologies guarantee that the production and testing processes are up to relevant standards, so that the products are satisfied by the requirements of clients doubtlessly.