Environmental protection special equipment manufacturing; Environmental protection special equipment sales; Metal chains and other metal products manufacturing; Metal chains and other metal products sales; Plastic product sales; Agricultural machinery sales; Special chemical product sales (excluding hazardous chemicals); Household product sales; Mechanical equipment sales; Mechanical equipment leasing; Computer software and hardware and auxiliary equipment retail; Automobile sales; Leasing services (excluding licensed leasing services); Domestic waste treatment equipment sales; Road freight transport for general cargo vehicles with a total mass of 4.5 tons and below (excluding network freight and dangerous goods). Licensed items: Urban domestic waste operational services; Construction labor subcontracting; Construction project construction.