Sales of food; Internet sales of food; Production of health foods; Road freight transportation (excluding dangerous goods); Manufacturing of Class II medical devices; Electrical installation services; Manufacturing of Class III medical devices; Operation of Class III medical devices. General items: Integrated system services for artificial intelligence industry; Sales of food (only pre-packaged food); Internet sales of food (only pre-packaged food); Internet sales (excluding goods requiring sales permits); Sales of health foods (pre-packaged); Road freight transportation for general cargo vehicles with a total mass of 4.5 tons or less (excluding network freight and dangerous goods); Domestic container freight forwarding; Retail of computer software, hardware, and auxiliary equipment; Sales of Class II medical devices; Information system operation and maintenance services; Sales of Class I medical devices; Manufacturing of Class I medical devices; Leasing of Class I medical devices; Leasing of Class II medical devices; Sales of electronic products; Manufacturing of electronic专用 equipment; Sales of electronic专用 equipment; Repair of specialized equipment; Import and export of goods; Import and export of technologies; Sales of daily necessities; Sales of general merchandise; Wholesale of textiles, clothing, and household items; Sales of miscellaneous daily items; Sales of special labor protection supplies; Sales of paper products; Sales of mobile terminal equipment; Sales of household items; Production of daily masks (non-medical); Sales of chemical products (excluding licensed chemical products).