Beijing and science and technology ltd. Is registered in building 1-1509, no. 13, north chao-yang district, beijing. The registration authority is the market supervisory authority of the beijing ho-yang district, with legal representatives, and operates on general items: technical services, technology development, technical advice, technology exchange, technology transfer, technology promotion; conference and exhibition services; teaching models and teaching aids manufacturing; stationery manufacturing; specialized equipment manufacturing; office equipment manufacturing; sale of office equipment; maintenance of computers and office equipment; sale of teaching models and teaching aids; installation and maintenance services; sale of sound equipment; sale of communications equipment; repair of communications equipment; manufacture of lighting equipment; sale of lighting; rental of cultural supplies; production of digital video surveillance systems; distribution of network equipment; production of commercial coded products; manufacturing of electrical equipment; sale of machinery equipment; sale of electronics; sale of stationery; retail distribution of stationery; distribution of digital creative products; graphic design production; office services; rental of office equipment. (except for projects subject to legal authorization, operating independently of the law by means of a business licence) (no activity shall be carried out in which the state and municipal industrial policy prohibits and restricts the operation of such projects