U.S. imports of Rennet & Rennet Concentrates (HS 350710) totaled $1.6M in August 2026, imported from 14 countries.
Importers of Rennet & Rennet Concentrates paid $150K in duties in August 2026, an average duty rate of 9.50% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Rennet & Rennet Concentrates imports of $1.6M in August 2026 ran 31% above the year-to-date monthly average of $1.2M.
Last updated: August 2026 dataRennet — the enzyme complex used to coagulate milk in cheese production — is a narrowly traded but commercially critical input for dairy processors, and the entire heading resolves to a single 10-digit line (3507100000). Denmark and Italy dominate global rennet supply, reflecting the concentration of industrial enzyme and dairy-culture manufacturing in those countries. Because rennet is used as a food-processing aid, FDA oversight applies to imported product, and foreign manufacturers must be registered under applicable food facility registration requirements. Importers should also distinguish animal-derived rennet from microbial or fermentation-produced chymosin, as the latter may be classified elsewhere.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
37 import shipments a month
Traditional animal rennet extracted from calf stomachs falls squarely within 3507.10. Fermentation-produced chymosin (FPC) — the dominant commercial form today — is also classified here when presented as a rennet or rennet concentrate, but importers should confirm with CBP if the product is a highly purified enzyme preparation, as some formulations may be classified under 3507.90 depending on their composition and presentation.
Rennet imported as a food-processing enzyme must come from a facility registered with FDA under the Bioterrorism Act food facility registration program. Prior Notice of importation is required for food-contact enzyme preparations. Importers should also ensure the product complies with FDA's GRAS (Generally Recognized as Safe) status or has an applicable food additive authorization for its intended use in cheese manufacturing.
ImportsExports
Imports
$1.6MYoY · free account
Exports
$353KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $12.7M of Rennet & Rennet Concentrates and exported $5.4M.
Through August 2026. Source: U.S. Census Bureau.
Trade Directory
List your company under HS 350710 — Rennet & Rennet Concentrates, so the companies trading it can find you. Be the first supplier listed.
Subheading 2 of 2 in heading 3507
Subheading 350710 · $1.6M of $58.8M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 3507100000 | Rennet and Concentrates Thereof | $1.6M | 9.50% | 100.00% | $150K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3507100000 | Rennet and Concentrates Thereof | $353K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · August 2026
origin
Denmark and Italy together supply 93% of it.
customs district
destination
entry
rate provision · imports
duty collected equals 9.50% of imports for consumption.