best industrial exhaust fan 1.low noise&lare airflow 2.durable motor 3.lower power consumption 4.good quality&low price best industrial exhaust fanspecification:1.low noise&lare airflow2.durable motor3.lower power consumption4.good quality&competitive price parameter: ModelStandard(mm)Voltage(v)Frequency(Hz)Watts(w)Speed(r/min)Flow rate(m3/h) ...
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