A Handheld Formaldehyde(HCHO) Detector

65301Published On Mar 25,2010 08:11 AMshare1
In the big cities, there are a lot of new office and home buildings for people to move in. Many of us move in so quickly that we don't even know if there is harmful gas inside. With this handheld HCHO detector, we can easily check any place if the gas has reach a level that might be harmful to human.

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terryoy
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