Subheading 3909.50 · Section VII

3909.50

Polyurethanes; in primary forms

Other subheadings under 3909

• 3909.10Urea and thiourea resins, in primary forms
• 3909.20Melamine resins, in primary forms
• 3909.31N.e.c. in heading no. 3909, in primary forms, poly(methylene phenyl isocyanate) (Crude MDI, polymeric MDI)
• 3909.39N.e.c. in heading no. 3909, in primary forms, other than poly(methylene phenyl isocyanate) (Crude MDI, polymeric MDI)
• 3909.40In primary forms