5 SIMPLE TECHNIQUES FOR SANDWICH PANEL

Methylene Diphenyl Diisocyanate (MDI): MDIs are manufactured with the phosgenation with the condensation product or service of aniline with formaldehyde. The commonest isomer Employed in polyurethane generation is purified four,4 isomers. MDIs are typically Employed in creating rigid and semi-rigid polyurethane foams.และผัก ทั้ง