久久久久久久精丨av香港经典三级级 在线丨美女国产一区丨第一福利在线观看丨av在线中文字幕不卡电影网丨一级三级毛片丨极品美女扒开粉嫩小泬图片丨天天舔天天操天天干丨成人性生交大片免费看中文丨白嫩少妇和二男三p爽的大声呻吟丨黄色应用在线观看丨色婷婷综合久色aⅴ五区最新丨亚洲区激情区无码区日韩区丨色婷婷狠狠久久综合五月丨小早川怜子xxxxaⅴ在线丨9999国产精品欧美久久久久久丨国产欧美日韩高清在线不卡丨国产精品香蕉在线观看网丨超碰在线cao丨国产一区二区三区久久久久久久

FEATURE

• Automatic adjustment and adaptive DC frequency conversion technology, energy saving;

• Ultra-low noise operation;

• Suitable for both fresh water and sea water;

• amphibious;

• The motor is fully sealed, no copper elements are exposed;

• Using ceramic shaft and sleeve, corrosion resistance and long life.