Sewage pumps are mainly sold in three time periods. This has a certain relationship with the seasonal changes, north and south differences are also great. Spring flood season, summer flood season and autumn flood season.
Spring floods generally due to the temperature rise, snow, frozen and formed the flood season. Water content and more sediment content, mainly concentrated in the northeast and northwest cold areas, time in April – May. Then the general water pump manufacturers will choose 2 – 3 months stocking, 3 – May sales season. Sewage pump mainly to the river, tributaries, outdoor sewage pump more.

