The registration address of nanjing blue sewage treatment equipment ltd. Is located in the temple village of yankang town, nanjing city, with the registration authority being the market supervision authority of nanjing city, with legal representatives zhang zhui zhuong zhuang, and its scope of operation includes the production and sale of pumping products, water treatment equipment; production, sale of hardware and power; installation of water treatment engineering equipment; manufacture, processing of mechanical accessories; import and export of self-employed and agency goods and technologies; production, sale of castings; rental of own houses; operation and maintenance of sewage treatment facilities. (projects subject to legal approval may not operate without the approval of the relevant department)