Usb Laser Air Purifier Lamp

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This usb machine can be made with Mini dvd disk,pc fan,usb cable,laser. Very easy to do .Laser can destroy...
This usb machine can be made with Mini dvd disk,pc fan,usb cable,laser. Very easy to do .Laser can destroy bacteria and fungus in the air .Its very effecitve way to clean the air. Also this machine make very good special usb lamp.
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