Sales of pesticides, chemical fertilizers, feed, building materials and decorative materials, communication equipment, medical equipment, chemical products (excluding hazardous chemicals and precursor dangerous goods), industrial textile products, wine and beverages; manufacturing of agricultural mechanical and electrical equipment, agricultural machinery, new energy vehicles, electric motorcycles, electric bicycles, and electric vehicles , production and sales; processing and sales of crops and food; engaged in technology development, technical consulting, and technical services in the fields of Internet and electronic technology; advertising design and production; conference services, exhibition hosting services; weak current engineering, network engineering; import and export trade; production and sales of daily masks (non-medical)