The registration address of tai chiu (beijing) science and technology ltd. Is located at the 18th street of the construction of the yangtze street in beijing city house. D2508, the registration authority is the market supervision authority of beijing city house hills, represented by a legal person, maui hong, operating in the areas of engineering survey; engineering design; technical services; professional contracting; sale of mechanical equipment, metal materials, hardware exchange (other than electric bicycles), construction materials, daily miscellaneous items and electronics; and installation of mechanical equipment. (an enterprise shall, in accordance with the law, freely choose to operate its projects and carry out its activities; the survey of works, the design of works and the projects subject to legal approval shall carry out its activities in accordance with the approved content, with the approval of the relevant sector; and it shall not engage in activities in which the industrial policy of the municipality prohibits or restricts the operation of projects of the type