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This serious of products are of air auto-cleaningequipment,which can be hoisted in the ceiling orput on supports to make part of the air clean in thehouse or feed terminal wind in the house.It isequipped with primary and high effective filters.Wind machine draws the air from the top and thenthe filters make it fresh.The air filtered blows outfrom the window at the speed of 0.45m/s±20%.equipped with primary and high effective filters.Wind machine draws the air from the top and thenthe filters make it fresh.The air filtered blows outfrom the window at the speed of 0.45m/s±20%.