The registration address of shandong ningan environmental engineering ltd. Is located at no. 3309 puji road, zou city, with the registration authority being the city market supervision authority of zou, and with the representation of legal persons, and includes the manufacture and installation of environmental equipment; the manufacture and installation of doors and windows; and the manufacture, installation and sale of non-marked steel components. (involving a licence to operate on the basis of a licence or an authorization document) (a project subject to legal authorization may only operate with the approval of the relevant department)。