Cooling Fan, Motor, Centrifugal Fan manufacturer / supplier in China, offering Krubo Ec Backward Centrifugal Fan K-Ec250-K230-28 Used for Ahu, Krubo Ec Backward Centrifugal Fan K-Ec190-R230-29y Used for Ahu, Krubo Ec Backward Centrifugal Fan K-Ec190-K230-39 Used for Ahu (Air Handling Unit) and so on.