Licensed Projects: Special equipment manufacturing, Installation, modification and repair of special equipment, Special equipment inspection and testing, Special equipment design。( 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.) General Projects: Special equipment sales, Machinery and equipment sales, Mechanical equipment research and development, Machinery and equipment rental, electronic、 Mechanical equipment maintenance( Excluding special equipment), General mechanical equipment installation services, Metal product sales, Sales of metal wire ropes and their products, Sales of electrical signal equipment, Technical Services、 Technology Development、 Technical Consulting、 Technical Exchange、 Technology Transfer、 Technology Promotion, Hardware wholesale, Hardware product retail, Home appliance sales, Door and window sales, Metal door and window construction, Electronic components wholesale, Electronic components retail, Sales of power electronic components, Sales of special electronic materials, Security equipment sales, General equipment repair, Safety technology prevention system design and construction services, Import and export of goods, Technology import and export。( In addition to licensing business, Able to independently operate projects that are not prohibited or restricted by laws and regulations)