Other millstones, grindstones, grinding wheels and the like of agglomerated synthetic or natural diamond (HS 680421)
Other millstones, grindstones, grinding wheels and the like of agglomerated synthetic or natural diamond (HS 680421) has 6,421 U.S. import bill-of-lading shipment records between Jan 2020 and Aug 2026. The largest U.S. importer of Other millstones, grindstones, grinding wheels and the like of agglomerated synthetic or natural diamond is DIAMOND PRODUCTS, with 268 shipments, followed by DIAMOND PRODUCTS LIMITED and NORITAKE CO INC. The leading supplier is AUGUST AMBER HK LIMITED, with 670 shipments, followed by STERLING ABRASIVES LTD and TYROLIT CONSTRUCTION PRODUCTS GMBH. Goods originate mainly from CHINA and INDIA, arriving primarily at NEW YORK/NEWARK AREA, NEWARK, NJ. 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 August 2026Cite as: ImportDoor, U.S. Customs bill of lading data (data through August 2026), https://www.importdoor.com/products/680421-other-millstones-grindstones-grinding-wheels-and-the-like-of-agglomerated-synthetic-or-natural-diamond
See all 6,421 shipments of HS 680421 with dates, ports, consignees, filters and CSV export in the ImportDoor dashboard.
Open in dashboardShipments by month (last 24 months)
Trade flow: top suppliers → U.S. importers
The strongest supplier-importer relationships for Other millstones, grindstones, grinding wheels and the like of agglomerated synthetic or natural diamond (HS 680421), by shipment volume. Hover a ribbon for details; click a name to open its profile.
The largest relationship is TYROLIT CONSTRUCTION PRODUCTS GMBH → DIAMOND PRODUCTS with 189 shipments, followed by TYROLIT CONSTRUCTION PRODUCTS GMBH → DIAMOND PRODUCTS LIMITED (120) and STERLING ABRASIVES LTD → INTERNATIONAL ABRASIVES (107).
Top U.S. importers
| Importer | Shipments |
|---|---|
| DIAMOND PRODUCTS | 268 |
| DIAMOND PRODUCTS LIMITED | 240 |
| NORITAKE CO INC | 216 |
| SAINT GOBAIN ABRASIVES INC | 184 |
| STANLEY BLACK & DECKER INC | 167 |
| GENERAL TOOL INC | 157 |
| KYB AMERICAS CORP | 153 |
| RADIAC ABRASIVES INC | 151 |
| ABRASIC 90 INC | 120 |
| TWIN MAX TOOLS CORP | 120 |
Top suppliers
| Supplier | Shipments |
|---|---|
| AUGUST AMBER HK LIMITED | 670 |
| STERLING ABRASIVES LTD | 423 |
| TYROLIT CONSTRUCTION PRODUCTS GMBH | 310 |
| TYROLIT SCHLEIFMITTELWERKE SWAROV SKI AG & CO | 251 |
| DIA RESIBON THAILAND CO LTD | 225 |
| NORITAKE ABRASIVES SUZHOU CO LTD | 178 |
| GRINDWELL NORTON LTD | 163 |
| YASUN ABRASIVES THAILAND CO LTD | 155 |
| KYB CORP | 153 |
| EHWA DIAMOND IND CO LTD | 151 |
Origin countries
| Country | Shipments |
|---|---|
| CHINA | 2,243 |
| INDIA | 1,006 |
| GERMANY | 490 |
| THAILAND | 490 |
| BELGIUM | 473 |
| ITALY | 428 |
| JAPAN | 324 |
| REPUBLIC OF KOREA | 199 |
| ISRAEL | 125 |
| TURKEY | 93 |
Ports of unlading
| U.S. port | Shipments |
|---|---|
| NEW YORK/NEWARK AREA, NEWARK, NJ | 2,052 |
| LOS ANGELES, CA | 1,542 |
| LONG BEACH, CA | 972 |
| SAVANNAH, GA | 426 |
| NORFOLK, VA | 369 |
| NEW YORK, NY | 323 |
| CHARLESTON, SC | 163 |
| MIAMI, FL | 132 |
| TACOMA, WA | 120 |
| HOUSTON, TX | 104 |
Harmonized System classification
HS code 680421 — Other millstones, grindstones, grinding wheels and the like of agglomerated synthetic or natural diamond. 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.
More products under HS 6804
Other six-digit codes in HS 6804: Millstones, grindstones, grinding wheels and the like, without frameworks, for grinding, sharpening, polishing, trueing or cutting, hand sharpening or polishing stones, and parts thereof, of natural stone, of agglomerated natural or artificial abrasives, or of ceramics, with or without parts of other materials, with their U.S. import volume.
Frequently asked questions about importing Other millstones, grindstones, grinding wheels and the like of agglomerated synthetic or natural diamond
Who imports Other millstones, grindstones, grinding wheels and the like of agglomerated synthetic or natural diamond (HS 680421)?
Based on U.S. Customs bill-of-lading records, the top U.S. importers of Other millstones, grindstones, grinding wheels and the like of agglomerated synthetic or natural diamond include DIAMOND PRODUCTS, DIAMOND PRODUCTS LIMITED, NORITAKE CO INC, SAINT GOBAIN ABRASIVES INC, and STANLEY BLACK & DECKER INC.
Who is the largest U.S. importer of Other millstones, grindstones, grinding wheels and the like of agglomerated synthetic or natural diamond?
DIAMOND PRODUCTS is the largest U.S. importer of Other millstones, grindstones, grinding wheels and the like of agglomerated synthetic or natural diamond (HS 680421), with 268 bill-of-lading shipment records.
Who are the top suppliers of Other millstones, grindstones, grinding wheels and the like of agglomerated synthetic or natural diamond?
Leading suppliers shipping Other millstones, grindstones, grinding wheels and the like of agglomerated synthetic or natural diamond (HS 680421) to the U.S. include AUGUST AMBER HK LIMITED, STERLING ABRASIVES LTD, TYROLIT CONSTRUCTION PRODUCTS GMBH, TYROLIT SCHLEIFMITTELWERKE SWAROV SKI AG & CO, and DIA RESIBON THAILAND CO LTD.
How many U.S. shipments of Other millstones, grindstones, grinding wheels and the like of agglomerated synthetic or natural diamond are there?
ImportDoor has 6,421 U.S. import shipment records under HS code 680421, spanning Jan 2020 to Aug 2026.
Where is Other millstones, grindstones, grinding wheels and the like of agglomerated synthetic or natural diamond imported from?
Other millstones, grindstones, grinding wheels and the like of agglomerated synthetic or natural diamond is imported into the U.S. primarily from CHINA, INDIA, and GERMANY.
Find Other millstones, grindstones, grinding wheels and the like of agglomerated synthetic or natural diamond importers & suppliers
Get the complete list of U.S. importers and global suppliers for HS 680421, with contact details and container-level shipment records on ImportDoor.
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