General Projects: Urban rail transit equipment manufacturing, Rail transit special equipment、 Sales of key systems and components, Railway rolling stock sales, Railway locomotive and vehicle parts manufacturing, Railway locomotive and vehicle parts sales, Railway transportation equipment sales, Mechanical equipment research and development, Machinery and equipment sales, Mechanical and electrical equipment manufacturing, Mechanical and electrical equipment sales, Mechanical parts、 Parts processing, Mechanical parts、 Parts Sales, Power facility equipment sales, General equipment repair, Traffic facility maintenance, electronic、 Mechanical equipment maintenance( Excluding special equipment), Technical Services、 Technology Development、 Technical Consulting、 Technical Exchange、 Technology Transfer、 Technology Promotion, Metrology technical services, Import and export of goods, Rental Services( No licensed rental services), Machinery and equipment rental, Non-residential real estate rentals, Human Resources Services( Excluding employment agency activities、 Labor dispatch services), Sales of special equipment for environmental protection, Sales of rail transit engineering machinery and parts, Car Sales, Auto parts retail, Special equipment sales, Charging pile sales, Sales of wind turbines and parts, Sales of photovoltaic equipment and components, Solar power generation technology services, Energy storage technology services。( In addition to licensing business, Able to independently operate projects that are not prohibited or restricted by laws and regulations) Licensed Projects: Inspection and testing services。( 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.)