The registration address of shandong permanent ventilation equipment ltd. Is located at no. 27, no. 27, north city street office, city economic technology development area, shandong province. The registration authority is the market supervision authority of the city economic technology development zone, which is represented by legal persons and includes general items: manufacture of refrigeration, air-conditioning equipment; sale of wind machines, fans; sale of metal products; sale of metal tools; sale of metal structures; repair of general equipment; sale of special equipment; sale of high-quality specialty steel materials; sale of fibre-fibre-enhanced plastics; sale of fibreglass fibres and products; sale of metal materials; sale of specialized equipment for environmental protection; wholesale distribution of five gold products; sale of building decoration materials; sale of doors and windows; sale of technical glass products; sale of building and water-proofing products; sale of machinery; sale of machinery; sale of mechanical equipment; sale of electrical and electrical equipment; installation of electrical equipment equipment; construction of electrical and mechanical equipment; construction of electrical services; construction of electrical equipment equipment and repair services; construction of hazardous equipment; construction of electrical and mechanical services; repair services; repair equipment repair (in addition to projects subject to legal authorization, projects are licensed to operate on an autonomous basis under a legal licence: various types of construction activities; construction of construction intellectual works; construction professional works; construction of fire facilities; subcontracting of construction services. (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)