The company also has cooperative factories such as Tianjin Steel, Taigang, Tianjin Steel, Hegang, and Shandong Steel. It has rich foreign trade experience and has established long-term cooperative relations with many well-known foreign companies.

Qingdao Lanhai New Materials Co., Ltd. is a large-scale domestic spot supply and production and sales base for carbon steel, profiles, steel bars, wires, and pipes. It mainly sells various imported and domestic steel plates, pipes, plates, bars, profiles, pipe fittings, welding materials, etc.

All the company's products comply with the national standard (GB), American standard (ASME, ASTM), Japanese standard (JIS) EN (European standard) GOST (Russian standard).

The company also has cooperative factories such as Tianjin Steel, Taigang, Tianjin Steel, Hegang, and Shandong Steel. It has rich foreign trade experience and has established long-term cooperative relations with many well-known foreign companies.