The registration address of yunico mining technology ltd., shandong, is located at 15-4 wamp road, quei district, tean city, with the registration authority of taian city. The zone market supervision authority, represented by legal persons, covers the manufacture, sale and maintenance of mining machinery and equipment; engineering equipment and accessories, blast-proofing equipment, electrical and electrical equipment, plasma support equipment, instrumentation, plastics, security equipment, mechanical equipment and accessories, sale of chemical products (without dangerous chemicals), cement and its products, hardware and electricity; steel processing; and import and export operations. (projects subject to legal approval may not operate without the approval of the relevant department)