The registered address of the city of tianan is the taidong industrial park in tianan city, shandong province, with the registration authority being the thai mountain market supervision authority, represented by legal persons, and includes the production and sale of medical equipment; the processing and sale of wood products; ordinary freight shipments; masks (non-medical), cotton veils, cloths, textiles, knitting, plastics, packaging materials, construction materials, daily miscellaneous items, sale of hardware, electricity, furniture and steel; recycling and distribution of recycled materials; and import and export operations. (projects subject to legal approval may not operate without the approval of the relevant department)