The registration address of beijing boring high technology ltd is 120 metres north of the village council of dadong village in the town of tungzhou, beijing city. The registration authority is the market supervision authority of tunzhou, beijing city. The legal entity is represented by zhang kyoying, and its operations include the promotion of technology; the sale of mechanical equipment and accessories, instrumentation instruments, hardware, hardware, building materials, electronics, computer software and assistive equipment, metal materials, cultural supplies; maintenance instrumentation forms; and economic and trade advice. (projects subject to approval in accordance with the law, which operate with the approval of the relevant authorities. I'm not sure