The registered address of beijing c. O. E. L. Is located at 86-n1191 on the yangtze road in the beijing city house, with legal representatives from the beijing city housing and mountain market supervision authority, with a general contract for construction; professional contracting; labour subcontracting; technical services; installation, maintenance and repair of electronics, household appliances, fire-fighting equipment, electrical tools, mechanical equipment; home decoration and design; sale of metal products, doors and windows; radiation protection, nuclear technology, electromagnetic shielding, technological development, technology transfer, technical advice (except for intermediaries), technical services; engineering survey; and engineering design. (the subjects of the market may, in accordance with the law, freely choose to operate projects and carry out business activities; the survey of works, the design of works and projects subject to legal approval, which shall be carrie...