With the acceleration of urbanization and the continuous improvement of people's living standards, not only the water consumption increases rapidly, but also the water quality requirements are higher and higher. "Water" has become a major problem that restricts national economic development and relates to urban construction. In recent years, the state has continuously invested a lot of resources in the field of environmental protection for management, such as water supply safety, discharge standards, etc. The problem of "running, emitting, dripping and leaking" in the water supply needs to be solved, and the pumping requirements are required to be improved, so the pump needs to work stably and reliably. The working condition of sewage treatment is more severe, and the sewage contains solid particles such as sediment and sludge, so the sealing requirements are higher. According to many years of industry experience, Tiangong can provide customers with optimized and most convenient solutions.