General Projects: General equipment manufacturing( Excluding special equipment manufacturing), Special equipment manufacturing( Excluding licensed professional equipment manufacturing), Drawing、 Computing and measuring instrument manufacturing, Drawing、 Sales of computing and measuring instruments, mold manufacturing, mold sales, Machinery and equipment sales, Communications equipment sales, General mechanical equipment installation services, Security equipment sales, Communications equipment sales, Mechanical equipment research and development, Communications equipment manufacturing, Communications equipment repair, Machinery and equipment rental, electronic、 Mechanical equipment maintenance( Excluding special equipment), Sales of special electronic equipment, Electronic measuring instrument sales, Daily necessities sales, Hardware product retail, Sales of packaging materials and products, Home appliance sales, Manufacturing of special equipment for electrical machinery, Mechanical and electrical equipment sales, Lighting fixture sales, General parts manufacturing, General equipment repair, Mechanical parts、 Parts processing, Mechanical parts、 Parts Sales, Material handling equipment sales, Metal cutting and welding equipment manufacturing, Metal cutting and welding equipment sales, Import and export of goods。( In addition to licensing business, Able to independently operate projects that are not prohibited or restricted by laws and regulations) Licensed Projects: Construction labor subcontracting。( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments, The specific business projects are subject to the approval documents or licenses of relevant departments.)