| 4. | Suitable for wastewater treatment of sewer and cesspool systems of residential complexes , schools and organizations , dormitories , state housing complexes , hospitals , libraries , sports stadiums , markets , factories and office buildings , recreation parks , etc 适用于住宅、机关学校、宿舍、国宅、医院、图书馆、体育场、市场、工厂、办公大楼、游乐区等之厕所污水处理。 |