how is Polyurethane foam made?
January 7, 2010 - 11:16 am
could you send me a link
Chemicals are added to produce gas in the mix used to make the polyurethane – Many ways http://en.wikipedia.org/wiki/Polyurethane
could you send me a link
Chemicals are added to produce gas in the mix used to make the polyurethane – Many ways http://en.wikipedia.org/wiki/Polyurethane