Loading...
Uploaded by richelpoon on Oct 31, 2006
New invention for drainage tube.Automatic air-insulation device for preventing backflow of gas containing bacteria and poisonous pollutants.SARS preventing.
Howto & Style
Standard YouTube License
sung si tun fun sunm
Miugel100 7 months ago
Load more suggestions
sung si tun fun sunm
Miugel100 7 months ago