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Qingzhou Yongsheng Machinery Co.,Ltd is one of the professional China air inlet manufacturers and suppliers,Website:http://www.qzys-exhaustfan.com, welcome to wholesale low price poultry air window, poultry house window from our factory. AIR INLET WINDOWYongsheng air inlet window used good quality engineering plastic by injection molding, the material’s high density make the product more fastness.The raw material have UV resistant material, the product have stronger anti-aging ability , longer service life, the sealing is tight, open and closed easily, with anti-bird nets.Double springs ensure the air inlet window sealed tightly.
