Reaction initiators, reaction accelerators and catalytic preparations, other (HS 381590)
Reaction initiators, reaction accelerators and catalytic preparations, other (HS 381590) has 3,735 U.S. import bill-of-lading shipment records between Aug 2019 and Jul 2026. The largest U.S. importer of Reaction initiators, reaction accelerators and catalytic preparations, other is KEMAI USA CHEMICAL CO LTD, with 595 shipments, followed by MITSUBISHI POWER AMERICAS INC and HUATAI CHEMICAL USA CORP. The leading supplier is KEMAI CHEMICAL CO LTD, with 775 shipments, followed by ALCHEMY TRADE SHANGHAI LIMITED and SHANDONG DEREK NEW MATERIALS COMPAN BLUE ECONOMIC ZONE. Goods originate mainly from CHINA and GERMANY, arriving primarily at LONG BEACH, CA. Import volume has held steady 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 Reaction initiators, reaction accelerators and catalytic preparations, other (HS 381590), by shipment volume. Hover a ribbon for details; click a name to open its profile.
The largest relationship is KEMAI CHEMICAL CO LTD → KEMAI USA CHEMICAL CO LTD with 595 shipments, followed by ALCHEMY TRADE SHANGHAI LIMITED → HB CHEMICAL CORP (120) and SHANDONG DEREK NEW MATERIALS COMPAN BLUE ECONOMIC ZONE → HUATAI CHEMICAL USA CORP (108).
Top U.S. importers
| Importer | Shipments |
|---|---|
| KEMAI USA CHEMICAL CO LTD | 595 |
| MITSUBISHI POWER AMERICAS INC | 245 |
| HUATAI CHEMICAL USA CORP | 161 |
| HB CHEMICAL CORP | 134 |
| ALBEMARLE CORP | 81 |
Top suppliers
| Supplier | Shipments |
|---|---|
| KEMAI CHEMICAL CO LTD | 775 |
| ALCHEMY TRADE SHANGHAI LIMITED | 183 |
| SHANDONG DEREK NEW MATERIALS COMPAN BLUE ECONOMIC ZONE | 109 |
| BAJER GLOBAL CHEMISTRY CO LTD | 105 |
| QINGDAO AUXILIARY CHEMICAL CO LTD | 95 |
Origin countries
| Country | Shipments |
|---|---|
| CHINA | 1,784 |
| GERMANY | 424 |
| BELGIUM | 253 |
| NETHERLANDS | 219 |
| REPUBLIC OF KOREA | 163 |
| NETHERLANDS ANTILLES | 98 |
| ITALY | 94 |
| INDIA | 84 |
| JAPAN | 77 |
| SINGAPORE | 73 |
Ports of unlading
| U.S. port | Shipments |
|---|---|
| LONG BEACH, CA | 809 |
| HOUSTON, TX | 695 |
| NEW YORK/NEWARK AREA, NEWARK, NJ | 587 |
| SAVANNAH, GA | 456 |
| LOS ANGELES, CA | 274 |
| NORFOLK, VA | 203 |
| CHARLESTON, SC | 189 |
| SEATTLE, WA | 108 |
| TACOMA, WA | 78 |
| MIAMI, FL | 61 |
Harmonized System classification
HS code 381590 — Reaction initiators, reaction accelerators and catalytic preparations, other. 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 Reaction initiators, reaction accelerators and catalytic preparations, other
Who imports Reaction initiators, reaction accelerators and catalytic preparations, other (HS 381590)?
Based on U.S. Customs bill-of-lading records, the top U.S. importers of Reaction initiators, reaction accelerators and catalytic preparations, other include KEMAI USA CHEMICAL CO LTD, MITSUBISHI POWER AMERICAS INC, HUATAI CHEMICAL USA CORP, HB CHEMICAL CORP, and ALBEMARLE CORP.
Who is the largest U.S. importer of Reaction initiators, reaction accelerators and catalytic preparations, other?
KEMAI USA CHEMICAL CO LTD is the largest U.S. importer of Reaction initiators, reaction accelerators and catalytic preparations, other (HS 381590), with 595 bill-of-lading shipment records.
Who are the top suppliers of Reaction initiators, reaction accelerators and catalytic preparations, other?
Leading suppliers shipping Reaction initiators, reaction accelerators and catalytic preparations, other (HS 381590) to the U.S. include KEMAI CHEMICAL CO LTD, ALCHEMY TRADE SHANGHAI LIMITED, SHANDONG DEREK NEW MATERIALS COMPAN BLUE ECONOMIC ZONE, BAJER GLOBAL CHEMISTRY CO LTD, and QINGDAO AUXILIARY CHEMICAL CO LTD.
How many U.S. shipments of Reaction initiators, reaction accelerators and catalytic preparations, other are there?
ImportDoor has 3,735 U.S. import shipment records under HS code 381590, spanning Aug 2019 to Jul 2026.
Where is Reaction initiators, reaction accelerators and catalytic preparations, other imported from?
Reaction initiators, reaction accelerators and catalytic preparations, other is imported into the U.S. primarily from CHINA, GERMANY, and BELGIUM.
Find Reaction initiators, reaction accelerators and catalytic preparations, other importers & suppliers
Get the complete list of U.S. importers and global suppliers for HS 381590, with contact details and container-level shipment records on ImportDoor.
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