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Air Cleaning and Ventilation | Clean Air
Posted by
bahron2000 162 days ago
Category Technology
http://www.cleanairchallenge.net —
The last time we talk a lot more to the introduction of fresh air (ie air) instead of the indoor air pollution. At first this seems reasonable, because the EPA says that indoor air is 2-5 times more polluted than the air outside. The air is better! What is not necessarily true. The outside air is not always clear
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