General equipment manufacturing (excluding special equipment manufacturing); pneumatic and electric tool sales; hardware product manufacturing; pump and vacuum equipment sales; hardware product wholesale; mechanical equipment sales; internet sales (excluding goods requiring sales permits); mechanical and electrical equipment manufacturing; material handling equipment sales; special equipment sales; household appliance sales; plastic product sales; lubricating oil sales; packaging materials and product sales; communication equipment sales; fire-fighting equipment sales; metal product sales; special labor protection product sales; rubber product sales; rubber product manufacturing; building material sales; environmental protection specialized equipment sales; non-metallic mineral product sales; drawing, calculating and measuring instrument sales; electrical instrument sales; power distribution switchgear equipment sales; specialized chemical product sales (excluding hazardous chemicals); computer hardware and software and auxiliary equipment retail; office equipment sales; office equipment consumables sales; daily-use department store sales; medical staff protective equipment wholesale; food additive sales; edible agricultural product retail; industrial robot installation and maintenance; brand management; labor protection product sales; lighting fixture sales; metal cutting and welding equipment sales; seal sales; fastener sales; lightweight building material sales; bearing, gear and transmission component sales; metal chain and other metal product sales; non-residential real estate leasing; technical services, technology development, technical consultation, technical exchange, technology transfer, technology promotion; loading and unloading; general cargo warehousing services (excluding hazardous chemicals and other items requiring permits); road freight transport of general cargo vehicles with a total mass of 4.5 tons or less (excluding network freight and dangerous goods); enterprise management consulting; engineering management services; goods import and export; technology import and export.