欧美一区二区日韩一区二区_人妻少妇AV中文字幕乱码_日韩精品久久久免费观看夜色_国产69精品久久久久孕妇大杂乱

 The fully automatic variable frequency constant pressure water supply pump is a type of fully automatic booster pump that is directly connected in series on the pipeline or installed on the edge of the water tank. It can automatically work and stop according to the water usage situation, and has a series of advantages such as stable pressure, cleanliness, hygiene, small size, low noise, energy saving, environmental protection, adjustable parameters, and simple use. It is an ideal water supply pump for boosting household tap water, villas, small hotels, farmhouses, small-scale water supply projects, and other areas.