二次供水设备的分类: Two water supply equipment classification: 现在市场上流行的供水设备，可以根据其类型的不同分为：无负压供水设备，无塔变频供水设备，双模变频供水设备，家用一体式供水设备，数控气压式供水设备和超静音管中泵变频供水设备等。 Popular on the market now, water supply equipment, can according to different its types as: non negative pressure water supply equipment, no tower frequency of water supply equipment, dual frequency of water supply equipment, household integrated water supply equipment, numerical control pneumatic water supply equipment and ultra quiet tube pump frequency c