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Subheading 3909.31
PSCC Subheading 3909.31 — Poly(methylene phenyl isocyanate) (crude MDI, polymeric MDI)
Subheading 3909.31 narrows Heading 3909 to Poly(methylene phenyl isocyanate) (crude MDI, polymeric MDI).
Practical summary
What this code covers
Subheading 3909.31 narrows Heading 3909 to Poly(methylene phenyl isocyanate) (crude MDI, polymeric MDI).
Administrative context
Where this code is used
Use this subheading when you already know the heading family but still need the tighter tariff split beneath it.
Selection note
How to choose it
Compare the trade line rows that follow Subheading 3909.31 and stop at the most exact wording.
Nearby subheadings
FAQ
What does PSCC 3909.31 cover?
Subheading 3909.31 narrows Heading 3909 to - - Poly(methylene phenyl isocyanate) (crude MDI, polymeric MDI) :.
Where is PSCC 3909.31 used in practice?
Use this subheading when you already know the heading family but still need the tighter tariff split beneath it.
How do I choose PSCC 3909.31 over nearby options?
Compare the trade line rows that follow Subheading 3909.31 and stop at the most exact wording.