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Methylene Diphenyl Diisocyanate (MDI): MDIs are made from the phosgenation with the condensation item of aniline with formaldehyde. The most typical isomer Employed in polyurethane manufacturing is purified 4,four isomers. MDIs are commonly used in manufacturing rigid and semi-rigid polyurethane foams.Corrugated vs. Foam Inserts: An extensive Compa