Cooling Pad, Poultry House Equipment, Pig Farm Equipment manufacturer / supplier in China, offering 50.54 Heavy Duty 415 V 380V 50 Hz 60Hz Industrial or Greenhouse Fan Louvers and Shutter Fan, 50 57 Premium-Efficient 2.2 Kw Motor Internal Motor Drive - No VFD Needed Soft Starts UV Resistance Plastic Housing Cone Fans, B. E. S. S Tested Variable Speed and Highly Efficient Ec Motor Actuated Opening Butterfly Damper PVC and PP Plastic Frame Shell/Housing Fan and so on.