for the following products
4,4'-MDI | 4,4'-Methylene-bis(phenyl isocyanate) | Diphenylmethane diisocyanate (mixture of 2,4'-and 4,4'-) | Diphenylmethane diisocyanate (mixture of di-and triisocyanates) | Diphenylmethanediisocyanate (4,4'-MDI) | MDI and 4,4'-Diphenylmethane diisocyanate
