LONGWELL axial flow fan ✅ 32% energy saving, pure copper motor + smart speed regulation, lower electricity cost! ✅ IP54 WATERPROOF and dustproof, stable in wet/acidic/alkaline environment. ✅ quickly dehumidify, solve the problem of fogging and mold growth in mirror surface. From home ventilation to industrial workshops, Langwei axial flow fans redefine air flow with technology!