Buta-1,3-diene and isoprene (HS 290124)
Buta-1,3-diene and isoprene (HS 290124) has 119 U.S. import bill-of-lading shipment records between Jan 2020 and Apr 2026. The largest U.S. importer of Buta-1,3-diene and isoprene is TRIBUTE ENERGY INC, with 27 shipments, followed by KRATON POLYMERS U S LLC and KRATON CORP. The leading supplier is FORMOSA PETROCHEMICAL CORP, with 30 shipments, followed by YEOCHUN NCC CO LTD and LOTTE CHEMICAL CORP. Goods originate mainly from REPUBLIC OF KOREA and CHINA, arriving primarily at SAVANNAH, GA. Import volume has risen over the past 12 months versus the prior year.
Sourced from U.S. Customs bill of lading data · Updated monthly · Data through June 2026
Shipments over time (last 24 months)
Trade flow: top suppliers → U.S. importers
The strongest supplier-importer relationships for Buta-1,3-diene and isoprene (HS 290124), by shipment volume. Hover a ribbon for details; click a name to open its profile.
The largest relationship is YEOCHUN NCC CO LTD → TRIBUTE ENERGY INC with 19 shipments, followed by FORMOSA PETROCHEMICAL CORP → KRATON POLYMERS U S LLC (17) and LOTTE CHEMICAL CORP → KRATON POLYMERS US LLC (12).
Top U.S. importers
| Importer | Shipments |
|---|---|
| TRIBUTE ENERGY INC | 27 |
| KRATON POLYMERS U S LLC | 17 |
| KRATON CORP | 16 |
| KRATON POLYMERS US LLC | 13 |
| KURARAY AMERCIA INC | 8 |
Top suppliers
| Supplier | Shipments |
|---|---|
| FORMOSA PETROCHEMICAL CORP | 30 |
| YEOCHUN NCC CO LTD | 20 |
| LOTTE CHEMICAL CORP | 16 |
| KURARAY CO LTD | 14 |
| CHINA JINSHAN ASSOCIATED TRADE CORP | 8 |
Origin countries
| Country | Shipments |
|---|---|
| REPUBLIC OF KOREA | 43 |
| CHINA | 26 |
| TAIWAN | 24 |
| JAPAN | 14 |
| SPAIN | 2 |
| HAITI | 2 |
| IRELAND | 2 |
| BRAZIL | 1 |
| COLUMBIA | 1 |
| ITALY | 1 |
Ports of unlading
| U.S. port | Shipments |
|---|---|
| SAVANNAH, GA | 31 |
| CHARLESTON, SC | 30 |
| HOUSTON, TX | 27 |
| NEW ORLEANS, LA | 10 |
| NEW YORK/NEWARK AREA, NEWARK, NJ | 10 |
| BALTIMORE, MD | 2 |
| LONG BEACH, CA | 2 |
| SAN JUAN, PUERTO RICO | 2 |
| MIAMI, FL | 2 |
| NORFOLK, VA | 1 |
Harmonized System classification
HS code 290124 — Buta-1,3-diene and isoprene. The Harmonized System is the international standard for classifying traded goods; U.S. Customs records this 6-digit code on every bill of lading.
Frequently asked questions about importing Buta-1,3-diene and isoprene
Who imports Buta-1,3-diene and isoprene (HS 290124)?
Based on U.S. Customs bill-of-lading records, the top U.S. importers of Buta-1,3-diene and isoprene include TRIBUTE ENERGY INC, KRATON POLYMERS U S LLC, KRATON CORP, KRATON POLYMERS US LLC, and KURARAY AMERCIA INC.
Who is the largest U.S. importer of Buta-1,3-diene and isoprene?
TRIBUTE ENERGY INC is the largest U.S. importer of Buta-1,3-diene and isoprene (HS 290124), with 27 bill-of-lading shipment records.
Who are the top suppliers of Buta-1,3-diene and isoprene?
Leading suppliers shipping Buta-1,3-diene and isoprene (HS 290124) to the U.S. include FORMOSA PETROCHEMICAL CORP, YEOCHUN NCC CO LTD, LOTTE CHEMICAL CORP, KURARAY CO LTD, and CHINA JINSHAN ASSOCIATED TRADE CORP.
How many U.S. shipments of Buta-1,3-diene and isoprene are there?
ImportDoor has 119 U.S. import shipment records under HS code 290124, spanning Jan 2020 to Apr 2026.
Where is Buta-1,3-diene and isoprene imported from?
Buta-1,3-diene and isoprene is imported into the U.S. primarily from REPUBLIC OF KOREA, CHINA, and TAIWAN.
Find Buta-1,3-diene and isoprene importers & suppliers
Get the complete list of U.S. importers and global suppliers for HS 290124, with contact details and container-level shipment records on ImportDoor.
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