Mechanical and electrical equipment and accessories installation, wholesale, retail; Hardware and electrical appliances, electronic products, instruments, meters, wires and cables, computer software and hardware and accessories, electrical appliances and accessories, mechanical equipment and accessories, pipeline valves and accessories, pneumatic, manual, and electric tools and accessories, transmission equipment and accessories, molds and accessories, rubber products, fasteners, LED products, lighting fixtures, tool cutters, building decoration materials, textiles, textile raw materials, daily necessities, labor protection supplies, office supplies, sanitary ware, cultural and sports supplies, ceramic products, automotive and motorcycle accessories, bearings, metal materials, packaging materials, plastic products, lubricating oil, welding rods, chemical products (excluding hazardous chemicals) wholesale and retail. Permitted items: Construction engineering construction; Residential interior decoration; General items: Construction machinery and equipment leasing; Road freight transport of general cargo vehicles with a total mass of 4.5 tons and below (excluding network freight and dangerous goods); Loading and unloading; General cargo warehousing services (excluding projects requiring permits such as hazardous chemicals); General mechanical equipment installation services; Electrical equipment repair; General equipment repair; Landscaping engineering construction; Indoor wooden door and window installation services; Metal door and window engineering construction; Metal processing machinery manufacturing; Metal structure manufacturing; Fresh fruit wholesale; Food sales (pre-packaged food only); Port facility and equipment and machinery leasing and maintenance services.