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Who's made the blowing agent conversion?

Abstract
Article gives a plant-by-plant statuses of polyisocyanurate insulation manufacturers' conversions to alternative blowing agents and third generation polyisocyanurate insulation products.
Date
12/2002
Author(s)
Mark Graham
Page(s)
49
Source
Professional Roofing / National Roofing Contractors Assn
Keyword(s)
blowing agent; polyisocyanurate; manufacturer conversion

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