Metal structure manufacturing; Metal structure sales; General machinery and equipment installation services; Domestic cargo transportation agency; Road cargo transportation by ordinary freight vehicles with a total mass of 4.5 tons and below (except online freight and dangerous goods); Material handling equipment sales; Material handling equipment manufacturing; Intelligent material handling equipment sales; Land consolidation services; Loading and unloading handling ; Design, manufacturing, and sales: general electromechanical equipment and automation equipment, agricultural equipment, industrial and mining equipment, construction equipment, automobile parts, and motorcycle parts (the above two items do not include engines); sales: measuring equipment, measuring and testing equipment, instruments, meters, hardware tools, electronics, circuit originals and assemblies, steam power, and steam circuit originals and assemblies. .