Sioux zongxi new materials technology ltd., with its registered address on the 3rd floor of no. 619 new tong road, yushan town, kunsan city, is the administrative approval authority of quinshan city, represented by legal persons and covers technical research and development, technical advice, technology transfer, technical services in the field of new materials; mechanical equipment, metal products, hardware products processing, marketing, technical services. (projects subject to legal approval may not operate without the approval of the relevant department)