Gansubian science and technology ltd. Is registered at the e210001022 first floor 003 in the first launch area of yiddang city, zhuang county, zhuangzhou, gansu province, and is represented by a legal person, the sanctuary, and operates on a licensed project: design of a built-in smart system (project subject to legal authorization and operating only with the approval of the relevant department); construction of metal doors and windows; sale of metal products; sale of architectural and decorative materials; retail sale of hardware products; installation of indoor wooden windows; sale of doors and windows; industrial engineering services; sale of electronic products; sale of metal spare parts for construction; sale of metal structures (projects not prohibited or restricted by law, except for authorized business)