General Projects: Engineering and technical research and experimental development, Civil aviation material sales, Aviation transportation equipment sales, Sales of teaching models and teaching aids, Mechanical parts、 Parts Sales, Machinery and equipment sales, Electrical equipment sales, Metal tool sales, Pneumatic and electric tool sales, Sales of distribution switch control equipment, Sales of electronic components and electromechanical components, Sales of special equipment for semiconductor devices, Metal product sales, Sales of power electronic components, electric wire、 Cable Operations, Electronic components retail, Hardware product retail, Stationery retail, Auto parts retail, Car decoration products sales, Daily necessities sales, Second-hand daily necessities sales, Garage Sale, Sales Agent, Lubricant sales, cosmetics retail, Fastener sales, Mechanical and electrical equipment sales, Electronics sales,Chemical product sales( Does not contain permitted chemical products), Certification Consulting, Import and export of goods。( In addition to licensing business, Able to independently operate projects that are not prohibited or restricted by laws and regulations)