The registered address of tianjin huatang pipeline engineering ltd. Is located on the street of point mountain in the western region of tianjin city. 10 in hongshan, the registration authority is the market supervision authority of the western district of tienjin city, represented by a legal person, and covers municipal plumbing works; cleaning services; sanitation works; maintenance of plumbing; maintenance of air conditioners; wholesale and retail distribution of pipes, water heating equipment and hardware; cleaning of septic tanks; and cleaning of pipes (project authorized by law and subject to the approval of the relevant department)