Licensed Projects: Import and export of goods, Import and export agent( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments, The specific business items are subject to the approval results.) General Projects: General equipment repair, Special equipment repair, General mechanical equipment installation services, Machinery and equipment sales, Pump and vacuum equipment sales, Sales of electronic components and electromechanical components, Electrical machinery and equipment sales, Smart vehicle equipment sales, Mechanical equipment research and development, Gas compression machinery sales, Hardware product retail, Metal product sales, Rubber product sales, Sales of labor protection products, Technical Services、 Technology Development、 Technical Consulting、 Technical Exchange、 Technology Transfer、 Technology Promotion( Except for projects that require approval according to law, Carry out business activities independently in accordance with the law with a business license)