The registration address of the radiation protection engineering co. Ltd. Is located in room 424 of area c, 45th floor-4 of the aujin building and decoration city, aoiland, xianging street, shandong province, where the registration authority is the market supervision authority of yang jia county, representing a wide range of legal persons, and includes licensed projects: construction of human defence and protection equipment; construction of specialized works; sewage treatment and reuse; construction engineering design; sale of type ii and iii ray devices; sale of i-ray devices; quality inspection of construction works; construction works; installation of human defence and protection equipment; sale of human defence engineering equipment; and interior decorations. General projects (projects subject to legal approval, subject to the approval of the relevant authorities, for which the approval of the relevant department is the subject of documents or licences) are subject to authorization: construction of metal doors and windows; sale of doors and windows; sale of medical devices in category i; sale of medical devices in category ii; leasing of medical equipment in category ii; sale of non-ferrous high-performance metals and alloyed materials; sale of high-performance fibres and composite materials; environmental consultancy services; sale of special equipment; engineering services; sale of specialized equipment for environmental protection; sale of electronic measuring instruments; retail distribution of hardware and metal equipment; installation of metal products; sale of construction materials; sale of metal materials; sale of chemical products (other than licensed chemical products); sale of functional glass and new optical materials; processing of non-ferrous metals; sale of specialized electronic equipment; development of new materials; manufacture of high-performance fibres and composite materials; sale of gas, liquid separation and pure equipment; manufacture of nuclear and radiation measuring instruments; sale of smart instrument instruments; manufacture of doors and windows; sale of non-metal minerals and products; labour services (other than labour dispatch); retailing of medical personnel. (in addition to projects subject to authorization under the law, the operation of the business is carried out autonomously under a licence)