The registration address of hua yiu engineering materials ltd. In taian, shandong province, is the grand mangingo industrial park in mangung town, taiyuan city. The market supervision authority of the district, which is represented by legal persons, is responsible for displaying the following: the manufacture of fibres and products; the sale of fibres and products; the processing of fabrics; the sale of plastics; the manufacture of plastics; the sale of waterproof products; the manufacture of waterproof products; the manufacture of rubber products; the manufacture of seals; the sale of seals; the sale of construction materials; the sale of synthetic materials; the manufacture of synthetic materials (other than dangerous chemicals); the wholesale distribution of penta gold products; the sale of fabrics; the sale of basic equipment for rail transport; the sale of engineering plastics and synthetic resins; the manufacture of engineering plastics and synthetic resins; the manufacture of synthetic fibres; the manufacture of synthetic fibres; the sale of metal materials; the sale of non-metal mines and products; the retail sale of hardware products; the sale of metal structures; the sale of high-performance fibres and composite materials; the manufacture of cement products; the sale of warm materials; the sale of valves and cyclones; and the sale of cement products (in addition to the legally approved projects, the autonomous operation of the law)