The registration address of ningxia heung steel engineering ltd. Is in production workshop no. 6 of the long island industrial park, ningxia yongning county, with the registration authority being the longning county market supervision authority, represented by the legal person wang fong, and covers the sale of metal materials, temperature-conserving materials, hardware, plastic steel products, labour products, electronics, machinery and equipment; rental of equipment; greening of the park; building works; and construction works. (projects subject to legal approval may not operate without the approval of the relevant department)