Poly(methylene phenyl isocyanate) (crude MDI, polymeric MDI) (HS 390931)
Poly(methylene phenyl isocyanate) (crude MDI, polymeric MDI) (HS 390931) has 415 U.S. import bill-of-lading shipment records between Jan 2020 and Jul 2026. The largest U.S. importer of Poly(methylene phenyl isocyanate) (crude MDI, polymeric MDI) is TOSOH SPECIALTY CHEMICALS USA INC, with 170 shipments, followed by POSCO INTERNATIONAL AMERICA CORP and ZINUS USA INC. The leading supplier is TOSOH CORP, with 170 shipments, followed by POSCO INTERNATIONAL CORP and COVESTRO DEUTSCHLAND AG. Goods originate mainly from JAPAN and REPUBLIC OF KOREA, arriving primarily at NORFOLK, VA. Import volume has declined over the past 12 months versus the prior year.
Sourced from U.S. Customs bill of lading data · Updated monthly · Data through July 2026
Shipments over time (last 24 months)
Trade flow: top suppliers → U.S. importers
The strongest supplier-importer relationships for Poly(methylene phenyl isocyanate) (crude MDI, polymeric MDI) (HS 390931), by shipment volume. Hover a ribbon for details; click a name to open its profile.
The largest relationship is TOSOH CORP → TOSOH SPECIALTY CHEMICALS USA INC with 170 shipments, followed by POSCO INTERNATIONAL CORP → POSCO INTERNATIONAL AMERICA CORP (21) and HENKEL GLOBAL SUPPLY CHAIN B V → HENKEL US OPERATIONS CORP (12).
Top U.S. importers
| Importer | Shipments |
|---|---|
| TOSOH SPECIALTY CHEMICALS USA INC | 170 |
| POSCO INTERNATIONAL AMERICA CORP | 21 |
| ZINUS USA INC | 13 |
| HENKEL US OPERATIONS CORP | 12 |
| COVESTRO LLC | 11 |
Top suppliers
| Supplier | Shipments |
|---|---|
| TOSOH CORP | 170 |
| POSCO INTERNATIONAL CORP | 21 |
| COVESTRO DEUTSCHLAND AG | 16 |
| KUMHO MITSUI CHEMICALS INC | 15 |
| HENKEL GLOBAL SUPPLY CHAIN B V | 13 |
Origin countries
| Country | Shipments |
|---|---|
| JAPAN | 145 |
| REPUBLIC OF KOREA | 71 |
| CHINA | 46 |
| BELGIUM | 34 |
| GERMANY | 31 |
| TURKEY | 21 |
| VIET NAM | 14 |
| ITALY | 11 |
| NETHERLANDS | 10 |
| NETHERLANDS ANTILLES | 8 |
Ports of unlading
| U.S. port | Shipments |
|---|---|
| NORFOLK, VA | 171 |
| SAVANNAH, GA | 39 |
| HOUSTON, TX | 36 |
| NEW YORK/NEWARK AREA, NEWARK, NJ | 32 |
| LOS ANGELES, CA | 29 |
| LONG BEACH, CA | 25 |
| CHARLESTON, SC | 20 |
| BALTIMORE, MD | 11 |
| NEW ORLEANS, LA | 11 |
| EVERETT, WA | 10 |
Harmonized System classification
HS code 390931 — Poly(methylene phenyl isocyanate) (crude MDI, polymeric MDI). The Harmonized System is the international standard for classifying traded goods; U.S. Customs records this 6-digit code on every bill of lading.
Not sure this is the right code? Search all 5,700+ subheadings with the free HS code lookup, or see which product categories are growing in our quarterly State of U.S. Imports reports.
Frequently asked questions about importing Poly(methylene phenyl isocyanate) (crude MDI, polymeric MDI)
Who imports Poly(methylene phenyl isocyanate) (crude MDI, polymeric MDI) (HS 390931)?
Based on U.S. Customs bill-of-lading records, the top U.S. importers of Poly(methylene phenyl isocyanate) (crude MDI, polymeric MDI) include TOSOH SPECIALTY CHEMICALS USA INC, POSCO INTERNATIONAL AMERICA CORP, ZINUS USA INC, HENKEL US OPERATIONS CORP, and COVESTRO LLC.
Who is the largest U.S. importer of Poly(methylene phenyl isocyanate) (crude MDI, polymeric MDI)?
TOSOH SPECIALTY CHEMICALS USA INC is the largest U.S. importer of Poly(methylene phenyl isocyanate) (crude MDI, polymeric MDI) (HS 390931), with 170 bill-of-lading shipment records.
Who are the top suppliers of Poly(methylene phenyl isocyanate) (crude MDI, polymeric MDI)?
Leading suppliers shipping Poly(methylene phenyl isocyanate) (crude MDI, polymeric MDI) (HS 390931) to the U.S. include TOSOH CORP, POSCO INTERNATIONAL CORP, COVESTRO DEUTSCHLAND AG, KUMHO MITSUI CHEMICALS INC, and HENKEL GLOBAL SUPPLY CHAIN B V.
How many U.S. shipments of Poly(methylene phenyl isocyanate) (crude MDI, polymeric MDI) are there?
ImportDoor has 415 U.S. import shipment records under HS code 390931, spanning Jan 2020 to Jul 2026.
Where is Poly(methylene phenyl isocyanate) (crude MDI, polymeric MDI) imported from?
Poly(methylene phenyl isocyanate) (crude MDI, polymeric MDI) is imported into the U.S. primarily from JAPAN, REPUBLIC OF KOREA, and CHINA.
Find Poly(methylene phenyl isocyanate) (crude MDI, polymeric MDI) importers & suppliers
Get the complete list of U.S. importers and global suppliers for HS 390931, with contact details and container-level shipment records on ImportDoor.
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