Zhejiang Yida Special Steel Co., Ltd., founded in 1996, is one of the biggest companies manufacturing stainless steel pipe and tube in Zhejiang Province. The company has two major manufacturing bases located respectively in Songyang industrial park of Lishui City and Longwan New City industrial park of Wenzhou City. It has more than 200 employees with a fixed asset of RMB 50 million and an output of more than 8, 000 tons in 2006. The company strictly carries out ISO9001:2000 international quality management sysytem, and is one of the earliest companies which are entitled as Pressure Piping Components manufacturer (Grade A and B, Number: TS2710C42-2011). The company is adopting the standards, such as GB, ASTM, DIN, EN, GOST, JIS, PED, and Rules for ships. OD ranges from 6 mm to 630 mm, and WT ranges from 1 mm to 30 mm. The main materal have 304/L/H, 316/L/H, 321/H, 317/L , 347/H, 310S, 2205, 250, 904L etc. The products are widely used in fertilizer, petroleum, central-station, boiler, power station, shiping military, chemical industry, environment protection, traffic, metallurgy and mine, printing and dyeing, food industry, medical equipement, and so on. The company is specialized in manufacturing high temperature resistant steel tube 310S and large diameter stainless steel seamless tubes made of various meterial. Customers both at home and abroad speak highly of the stabilization and credibility of the product quality. Temperature resistant steel tube 310S, which is specially used in manufacturing electrothermal furnance tubes, is our strong point. Our company, as the first company manufactures stainless tube 310S in Wenzhou city, has advanced technology in manufacturing it, and has large market share in this field. In order to retain the leading quality of the products and to strengthen the brand competitiveness, the company established the quality inspection center, which has ETM16-159 eddy current detector, UT16-159 ultrasoinc detector, UT159-630 ultrasoinc detector, 30Mpa Hydrostatic testing machine, material testing machine, chemical analyzers, interganular corrosion test, and so on. We can make sure that the pass rate of the products to be 100%. Adhering to the ideal of ?Specialty, Improvement and Broadness?, the company devotes to creating and achieving a dynamic management style and builds modern system of quality. Under the management principle of ?Name Brand Strategy? and through the introduction of international advanced equipment and techniques, it provides national and foreign customers with superior products and services. On behalf of all the staff, Guo Yuyan, the Board Chairman, and Wang Maojian, the General Manager, sincerely invite all the customers, home and abroad, to visit and make comments. We would like to cooperate with our counterparts from all over the world, coexist and co-develop on the field of stainless steel.