Drug wholesale; Class III medical device operations; food sales; crop seed operations; import and export of crop seeds; gas operations; medical services; sales of pharmaceutical excipients. General items: food sales (only pre-packaged food); sales of health food (pre-packaged); sales of foods for special medical purposes; sales of infant formula milk powder and other infant formula foods; sales of Class I medical devices; sales of Class II medical devices; wholesale of medical masks; internet sales (excluding goods requiring sales permits); internet sales of food (only pre-packaged food); sales of disinfectants (excluding hazardous chemicals); sales of sanitary products and disposable medical supplies; sales of personal hygiene products; sales of labor protection supplies; wholesale of medical protective equipment; sales of special labor protection supplies; wholesale of cosmetics; sales of daily-use chemical products; sales of chemical products (excluding licensed chemical products); sales of packaging materials and products; sales of daily necessities; sales of electronic products; sales of IoT devices; sales of security equipment; sales of communication equipment; wholesale of aquatic products; sales of grains; procurement of primary agricultural products; sales of agricultural and sideline products; sales of timber; sales of high-quality synthetic rubber; technical services, technology development, technical consulting, technical exchange, technology transfer, and technology promotion; import and export of goods; technology import and export; road freight transport for ordinary trucks with a total mass of 4.5 tons or less (excluding network freight and dangerous goods); health consulting services (excluding diagnostic and treatment services); elderly care services; nursing institution services (excluding medical services).