♦ 1. European imported brushless blower, low noise, high rotate speed, running steady, long life, energy saving, high efficiency; ♦ 2. PWM speed control, according to the amount of dust to achieve precise adjustment; ♦ 3. Four layers filtration to ensure filtrate harmful material of the fumes completely, to achieve room air quality standard, protect environment and people’s health; ♦ 4. Prefilter, Medium Efficiency Filter & main filter both can replace individually, extend filter’s use life and reduce filter replacement cost; ♦ 5. Metal framework structure desgin, equipment with small size, saving floor space and can be movable easily.