General projects: Engineering and technical research and experimental development; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Wholesale of cosmetics; Sales of hygiene products and disposable medical supplies; Internet sales (excluding the sale of licensed goods); Sales of Class I medical devices; Sales of Class II medical devices; Wholesale of medical masks; Sales of daily masks (non medical); Wholesale of protective equipment for medical staff; Sales of disinfectants (excluding hazardous chemicals); Catering management; General cargo warehousing services (excluding hazardous chemicals and other projects that require licensing and approval); Low temperature storage (excluding hazardous chemicals and other projects that require approval); Food internet sales (only selling pre packaged food); Sales of health food (pre packaged); Sales of formula foods for special medical purposes; Food import and export; Import and export of goods; Technology import and export; Sales of mechanical equipment; Wholesale of kitchenware, sanitary ware, and daily necessities; Retail of kitchenware, sanitary ware, and daily necessities; Hotel management; Sales of agricultural and sideline products; Retail of edible agricultural products; Wholesale of edible agricultural products. (Except for projects that require approval according to law, conducting business activities independently based on the business license in accordance with the law) Licensed project: food production; Grain processing and food production; Production of health food; Production of formula foods for special medical purposes; Seasoning production; Food sales; Road freight transportation (excluding dangerous goods); Catering services. (For projects that require approval according to law, business activities can only be carried out after approval by relevant departments. The specific business projects shall be subject to the approval documents or permits issued by relevant departments.)