General equipment manufacturing (excluding special equipment); Mechanical equipment sales; Refining and chemical production special equipment manufacturing; Mining machinery manufacturing; Mining machinery sales; Food, beverage, alcohol, and tea production special equipment manufacturing; Packaging special equipment manufacturing; Agricultural and sideline food processing special equipment manufacturing; Feed production special equipment manufacturing; Rubber product manufacturing; Rubber product sales; Glass fiber reinforced plastic product sales; Glass fiber reinforced plastic product manufacturing; Metal structure manufacturing; Metal structure sales; General parts manufacturing; Mechanical parts and components sales; Hardware product wholesale; Metal material sales; Non-metallic mineral and product sales; Technical services, technology development, technical consulting, technology exchange, technology transfer, technology promotion; Industrial robot installation and repair; Industrial robot manufacturing; Environmental protection special equipment manufacturing; Road freight transport of general cargo vehicles with total mass of 4.5 tons and below (excluding online freight and dangerous goods); Goods import and export; General mechanical equipment installation services; Mechanical equipment R&D. Permitted items: Road freight transport (online freight).