Vietnam supplies 29.1% of U.S. imports of Calcium Carbonate, across 28 countries (year to date through August 2026).
HHI 1,528 of 10,000 · HHI 1,000–1,800. The sum of each country’s squared percentage share; one country with everything scores 10,000.
28 countries supplying this product to the U.S.
| Rank# | Country | Value | Share | YoY | Duty |
|---|---|---|---|---|---|
| 1 | India | $424K | 18.2% | -14.9% | 9.9% |
| 2 | Canada | $397K | 17.0% | +35.4% | 0.2% |
| 3 | France | $372K | 15.9% | +91.5% | 10.0% |
| 4 | Vietnam | $254K | 10.9% | +55.5% | 12.5% |
| 5 | Japan | $228K | 9.8% | +17.7% | 8.8% |
| 6 | China | $116K | 5.0% | +147.3% | 37.5% |
| 7 | Bahamas | $116K | 5.0% | -11.6% | 0.0% |
| 8 | Spain | $109K | 4.7% | +23.6% | 10.0% |
| 9 | Mexico | $73K | 3.1% | -7.8% | 0.0% |
| 10 | Egypt | $70K | 3.0% | -44.1% | 12.5% |
| 11 | Dominican Republic | $61K | 2.6% | +8.3% | 12.5% |
| 12 | Malaysia | $42K | 1.8% | -28.6% | 7.2% |
| 13 | South Korea | $28K | 1.2% | +89.6% | 12.5% |
| 14 | Italy | $12K | 0.5% | -89.4% | 10.0% |
| 15 | Belgium | $11K | 0.5% | +156.9% | 10.0% |
| 16 | Germany | $8K | 0.4% | -25.8% | 10.0% |
| 17 | Colombia | $6K | 0.3% | -16.4% | 12.5% |
| 18 | Netherlands | $5K | 0.2% | -20.4% | 10.0% |
| 19 | Hong Kong | -- | 0.0% | -- | -- |
| 20 | Taiwan | -- | 0.0% | -44.6% | -- |
| 21 | Guatemala | -- | 0.0% | -- | -- |
| 22 | Ireland | -- | 0.0% | -- | -- |
| 23 | Slovakia | -- | 0.0% | -- | -- |
| 24 | Switzerland | -- | 0.0% | -83.1% | -- |
| 25 | United Kingdom | -- | 0.0% | -85.9% | -- |
| 26 | Israel | hidden | hidden | hidden | hidden |
| 27 | Brazil | hidden | hidden | hidden | hidden |
| 28 | Curaçao | hidden | hidden | hidden | hidden |
Duty is the duty Census calculated on this month's imports for consumption from each country, as a share of their customs value. It applies the rates in force, additional duties such as Section 301, 232 and IEEPA included and claimed trade-agreement preferences netted out, so it is an observed rate rather than a statutory one. It is an estimate, not duty collected: antidumping and countervailing duties, fees and later refunds are not in it. YoY compares year-to-date value with the same months last year.