Sales of communication equipment, electronic products, instruments and office machinery; sales of automobiles, motorcycles and spare parts; sales of household appliances; domestic trade; import and export of goods and technology. Operating e-commerce; online trade, online consultation, online advertising, online business services; sales of hardware products, mold steel, aluminum materials, copper materials, hardware profiles, hardware accessories, and metal materials: technical development and sales of plastic products, silicone products, plastic molds, and metallurgical tools. Operating import and export business. Sales of household products; sales of daily chemical products. Production of automotive supplies. Production and sales: masks, thermometers, thermometers, alcohol, disinfectants, protective clothing, protective masks, and medical equipment.