The duct fan is the duct fan, which uses high-speed rotation to exert pressure on the gas, so as to achieve the function of conveying gas. Duct Fans are widely used in industry, buildings, indoor ventilation or duct pressurization. Duct Fans Duct Fans ZIBO SUNTAE GLOBAL IMPORT & EXPORT CO.,LTD , https://www.qinengfan.com
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