The registration address of yunsai (shanghai) power science and technology ltd. Is located at 1036 on the west gate road in hueng district, shanghai city, with legal persons representing liu yongfook, operating on licensed projects: import and export of goods; import and export of technology; import and export agents; construction works (subject to legal authorization for projects, subject to the approval of the relevant sector) in general projects: technical services, technology development, technical advice, technology exchange, technology transfer, technology promotion; conference and exhibition services; advertising design, agency; computer system services; data-processing services; trade brokers; information advisory services (without licensing); sale of electronic products; retailing of computer hardware and hardware and ancillary equipment; sale of communications equipment; retailing of five-dollar products; sale of chemical products (without licensed chemical products); sale of machinery equipment; sale of clothing and clothing; retail sale of shoes; retailing of toys; retailing of sporting goods and equipment; retailing of appliances; sale of metal products; retailing of vehicles; and contracting works (with the exception of the legal licence, autonomous operations)。