Operation of hazardous chemicals; Production of pharmaceuticals; Road transport of dangerous goods. General items: Sales of Class II medical devices; Manufacturing of basic chemical raw materials (excluding hazardous chemicals and other licensed chemicals); Road freight transport for vehicles with a total mass of 4.5 tons or less (excluding online freight and dangerous goods); Sales of special equipment; Technical services, development, consulting, exchange, transfer, and promotion; Leasing services (excluding licensed leasing services); Domestic trade agency; Manufacturing of gas and liquid separation and purification equipment; Sales of gas and liquid separation and purification equipment; Sales of specialized chemical products (excluding hazardous chemicals); Manufacturing of specialized chemical products (excluding hazardous chemicals); Sales of food additives; Sales of chemical products (excluding licensed hazardous chemicals); Sales of metal cutting and welding equipment; Sales of non-electric household appliances; Manufacturing of metal tools; Sales of metal tools; Sales of mechanical equipment; Sales of environmental protection special equipment; Sales of station hydrogen refueling and storage facilities; Wholesale of kitchen and bathroom utensils and daily necessities; Processing of mechanical parts and components; Sales of mechanical parts and components; Metal cutting processing services; Sales of synthetic materials; Sales of terminal metering equipment; Sales of electrical signal equipment devices; Sales of non-ferrous metal alloys; Sales of packaging materials and products; Leasing of special equipment.