... control 2.advaced IC MCU control system 3.large air volume system BTD Car Tools Co., Ltd is ... -Direct Drive 1×7.5KW,970RPM,380V,50HZMotor (Fresh Air)Siemens Motor Motor certificationCE-Direct Drive 1×7.5KW, ... 970RPM, 380V,50HZ Motor (Exhaust Air)Siemens Motor Motor certificationCE- Fan Capacity 25.000m³/h ... - Air Flow Speed +/- 0.25 m/s in an ...