·多种型号，适用范围更为广泛
·风量更大，噪音更低
·优化风轮——科学风道设计，优化风轮结构
·卓越电机，运转宁静，品质恒久，寿命更长
·Various models,Applicable to a variety of place
·Enhance air flow,silence running
·Iprovement wind wheel design and enforement struture,Science air direction design
·Excellent motor: energy saving,silence running, stable quality & long life