... . Besides many varieties and specifications, our products are of beautiful appearance and stable performance. They meet the standards of GB12459-90 ... 316L, 347, 310S, 317L, S31803, and 904L. The products which are widely used in many industrials such as shipbuilding,petroleum,chemical ... , Southeast Asia and other countries and regions. Longli products are excellent. We believe one motto: we don't read ...