INDICATORS ON ใยหิน YOU SHOULD KNOW

Methylene Diphenyl Diisocyanate (MDI): MDIs are created from the phosgenation on the condensation item of aniline with formaldehyde. The most typical isomer Employed in polyurethane production is purified four,4 isomers. MDIs are generally Utilized in developing rigid and semi-rigid polyurethane foams.Mattresses: Given that polyurethane foam is ava