vane axial fan造句

• Products series provided by greenheck includes : fans and ventilators , centrifugal and vane axial fans , kitchen ventilation system , damper , louvers , make - up air units and energy recovery ventilators
  格林瀚克提供完整的产品系列，包含一般风机与通风设备、商用及工业用离心式风机、轴流式风机、厨房通风系统、风阀、百叶、新风机组及能源回收通风系统。