Zhejiang Yida Special Steel Co., Ltd. Zhejiang Yida Special Steel Co., Ltd, founded in 1996, is one of the leading companies manufacturing stainless steel seamless pipe and tube in Zhejiang, China. 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 USD 6, 700, 000 and an output of more than 8, 000 metric tons in 2006. The company strictly carries out ISO9001: 2000 international quality management system, 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 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 material are 304/L, 316/L, 321/H, 310S, etc. The products are widely used in fertilizer, petroleum, central-station, boiler, power station, shipping military, chemical industry, environment protection, traffic, metallurgy and mine, printing and dyeing, food industry, medical equipment, and so on. 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 ultrasonic detector, UT159-630 ultrasonic 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%. 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 in the field of stainless steel.