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The "knotty problem" of polyurethane foamPolyurethane foam is created by mixing chemicals derived from crude oil with specific blowing agents to produce a flexible plastic with a cellular structure that has the potential to be soft ...
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Dow Leads PU Roofing Market with Superior InsulationMetal roofs with sprayed-on PU (Polyurethane) foam insulation ... is also lightweight and does not excessively burden the roof structure. Additionally, it is easy to install and aesthetically ...
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