Better filter
Published on Dec 17th, 2009 in P2 with
Nowadays air pollution become a very hot topic to everyone. Our earth become so warm because the earth had been badly spoil by us. When can we become alert and start protecting our world?
The air also very bad. Even our aircond filter also need to clean from time to time. Last time still can drag to 2-3 month then only clean it. But now have to clean it quite often. I wonder do I need to clean quite often if I will to use HAVC filters?
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