Two families. Through the introduction of Yancheng Lian Xin Iron and Steel Co., Ltd. and Shanghai Chongguang Industrial Co., Ltd., it can be known that Yancheng Lian Xin Iron and Steel Co., Ltd. mainly deals in iron and steel smelting; Steel calendering; Productive recovery of scrap metal; R&D waste heat, residual pressure and gas utilization technology; Sales of solar thermal power generation products; Coal and product sales. Shanghai Chongguang Industrial Co., Ltd. is mainly engaged in automobile supplies, knitted textiles, bedding, labor insurance supplies, clothing and accessories, toys, lighting equipment, photographic equipment, furniture, household goods, fitness equipment, metal materials, building materials, rubber and plastic products, wood products, Wujinjiaodian, sales of water pipes and valves, conference services, greening projects, website construction, and photography services. Yancheng Lian Xin Iron and Steel Co., Ltd. is located on the west side of the second phase wharf of Dafeng Port on the Yellow Sea, in the Lingang Industrial Park of Dafeng Port Economic Zone, and Shanghai Chongguang Industrial Co., Ltd. is located on Haifeng Road, Jinshan District, Shanghai.