bfc22

1.two-speed 2.reduce engine exhaust emission 3.Extend engine life two-speed operationMaintain engine temperature in an ideal range,reduce engine exhaust emissionExtend engine life ,reduce maintenance costsProper cooling by adjusting fan speed,lower fuel consumption of fanReduce fan noiseHigh-capacity refrigeration,no disk slidingExtremely fast response to temperature fluctuationBased on customers ...