Yao Hao main brands: Krupp, Nippon Steel, JFE, Sumitomo, Baoshan, Pohang, as the card, steel, TISCO, Zhang Pu, Lianzhong, Castle Peak, Wu airlines and other well-known brands at home and abroad. Main materials: 2520, 2205, 2507, 310S, 309S, 904L, 630, 317S, 316L, 316F, 304F, 304L, 304, 321, 301, 303Cu, 303F, 410,, 201, 430F, 420J2, 416, and so on