Licensed Projects: Construction project construction, Construction labor subcontracting, Professional construction work。( 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: Metal cutting and welding equipment manufacturing, Metal cutting services, Steel rolling processing, General mechanical equipment installation services, Special equipment repair, General equipment repair, Rubber product manufacturing, Rubber product sales, Wood processing, Timber sales, Mirror and similar product processing, Vacuum coating processing, Technical glass manufacturing, Technical glass sales, Technical Services、 Technology Development、 Technical Consulting、 Technical Exchange、 Technology Transfer、 Technology Promotion, Pump and vacuum equipment sales, Sales of special electronic equipment, 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)