Beijing san angud science and technology development ltd. Is registered at block a216 of defence road no. 43, western fair town, tunzhou, beijing city, with the registration authority of the beijing city administration for commerce and industry and its legal representative, wang quan, and operates in the areas of technology promotion, technology development, technical services, technical advice, technology transfer; software development; sales instrumentation, video surveillance equipment, alarm system access control equipment, building systems (visible) systems, computer software and assistive equipment, electronics, communications equipment, electronics units, hardware delivery, household appliances; maintenance instrumentation (open door only); and professional contracting. (an enterprise shall, in accordance with the law, freely choose to operate a project for the purpose of carrying out its activities; an approved project shall, in accordance with the law, operate on the basis of the approved content, subject to the approval of the relevant sector; and it shall not engage in activities in which the industrial policy of the district prohibits or restricts the operation of such projects