The registration address of the ishikobashi company is located in room 1008 of the south-eastern corner of yuhua road and time street, in the western district of ishiya bridge. The registration authority is the market supervision authority of the western area of the bridge. The legal person is represented by the high-glority authority, which operates on general items: technical services, technical development, technical advice, technical exchange, technology transfer, technical promotion; door and window manufacturing (separation only); sales of doors and windows; construction of metal doors and windows; installation of indoor wooden doors and windows; sale of traffic and public management signboards; retail sale of hardware products; wholesale distribution of five gold products; sale of daily department goods; sale of household appliances; sale of construction materials; sale of electronic products; sale of machinery and equipment; sale of office equipment; retailing of stationery; distribution of stationery; fire technology services; sale of fire-fighting equipment; sale of protective equipment; repair of general-purpose equipment; sale of digital video surveillance systems. (in addition to the legally approved project, the autonomous operation of a commercial licence, construction works (in addition to the construction of a nuclear power station); construction of a civil airport (a project subject to legal approval may only be carried out with the approval of the relevant department, subject to the approval documents or licences of the relevant department)