国产视频1I国产又粗又硬又爽视频I在线v片I91视频 - v11avI69国产成人综合久久精品欧美I亚洲人成网站精品片在线观看I色诱亚洲精品久久久久久

FEATURE

• In-line installation andlower water suction.

• Flow Gradient Mode(AUTO): Power, flow and head are changedupand downincyclesIdealfor modernlandscape construction.

• Multistage water flowis adjustable by regulation modes tomeetdifferent demands；

• High-effect and energy saving byDC frequency conversiontechnology

• Six-pole three-phase motor driving, stable and silentrunning；

• Multi protection functions by the single-chip build-in computer.

• With high-quality ceramic shaft and bearings, suitable for fresh and sea water.