Sale: coal, Petroleum products, car( Excluding used car transactions), Mechanical equipment, Hardware and Electrical, Electronics, building materials, Auto Parts, steel, rubber products, plastic products, Agricultural and livestock products, Daily necessities, Knitted textiles, Clothing, shoes and hats, communications equipment( Excluding second-hand mobile phone sales), Cultural and sports supplies, furniture, fitness equipment; Import and export of goods and technology, car rental, Cleaning Services, Environmental sanitation management( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments)