With the trend towards seeking fresh air and energy recovery in ventilation industry, Beijing Hengda Shengye Electromechanical Equipment Manufacturing Co., Ltd takes up with excogitating draught fans and terminal equipments of central air conditioner. We provide various products, ranging from industry & construction decoration to civil purpose appliance. Products now available on the market include: AHU(air handling units)/AHE(air to air heat exchanger) ventilation box series/centrifugal fan series/ fan With the trend towards seeking fresh air and energy recovery in ventilation industry, Beijing Hengda Shengye Electromechanical Equipment Manufacturing Co., Ltd takes up with excogitating draught fans and terminal equipments of central air conditioner. We provide various products, ranging from industry & construction decoration to civil purpose appliance. Products now available on the market include: AHU (air handling units)/AHE(air to air heat exchanger) ventilation box series/centrifugal fan series/ fan coil units/static blower/intake/outtake adjustable vent. Nowadays, models developed by ourselves have won good fame on the international market for its compact and fine appearance, high efficiency, and perfect performance. As one of the most famous and earliest companies in ventilation industry, we endeavor to become a brand with excellent quality, favored price and passionate service.