Licensed Projects: Import and export of goods, Technology import and export( 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 manufacturing( Excluding special equipment manufacturing), Metal structure manufacturing, Metal processing machinery manufacturing, Hydraulic power machinery and components manufacturing, Pneumatic power machinery and components manufacturing, Mechanical parts、 Parts processing, Dust removal technology equipment manufacturing, Railway locomotive and vehicle parts manufacturing, Mechanical and electrical equipment manufacturing, Hardware product manufacturing, Industrial control computer and system manufacturing, Electronic component manufacturing, Manufacturing of special measuring or inspection instruments for railways, Technical Services、 Technology Development、 Technical Consulting、 Technical Exchange、 Technology Transfer、 Technology Promotion, General equipment repair, Special equipment repair, Rubber product manufacturing, Plastic product manufacturing, Plastic product sales, Rubber product sales, Synthetic material sales, Synthetic material manufacturing( No hazardous chemicals), Sales of engineering plastics and synthetic resins, Domestic trade agent, Sales Agent( Except for projects that require approval according to law, Carry out business activities independently in accordance with the law with a business license)