The registration address of china-yu tai science and technology development ltd. In beijing is 868th floor, 7th floor, of road 218th floor, in the city of beijing, and the registration authority is the market supervision authority of the city of beijing-yongyang, with legal representatives for the purpose of paying tributes, covering general projects: technical services, technology development, technical advice, exchange of technology, technology transfer, technical promotion; sales of fire equipment; construction services for the design of safety technology preventive systems; manufacture of digital video surveillance systems; sale of the internet (other than goods for which a licence is required); sale of construction materials; manufacture of metal materials; manufacture of instrumentation forms; sale of office supplies; sale of machinery equipment; development of mechanical equipment; sale of electronic products; information advisory services (without licensing information); enterprise management; engineering technical services (with the exception of planning, survey, design, supervision); standardization services; conference and exhibition services; labour services (other than labour dispatching); installation of general machinery equipment; fire technology services; construction of safety and defence equipment; and sale of security equipment. Licensing projects (in addition to legally authorized projects, operating autonomously under a licence): basic telecommunications operations; type ii value-added telecommunications operations; and type i value-added telecommunications operations. (a project subject to approval by law may only be carried out with the approval of the relevant department, depending on the documents or licences approved by the relevant department) (no activity shall be carried out in the category of projects prohibited and restricted by the state and municipal industrial policy