U.S. imports of products of natural milk constituents (nesoi) (HS 040490) totaled $33.9M in April 2026, traded with 17 countries.
Last updated: April 2026 dataMilk protein concentrates — a key functional ingredient in cheese manufacturing and nutritional products — are specifically enumerated at line 0404901000, distinguishing them from the broader residual dairy categories at 0404905000 and 0404907000. New Zealand leads US import supply for this heading, followed by Canada and Germany, reflecting the dominance of large-scale dairy processing industries in those markets. Classification here requires confirming that the product is composed of natural milk constituents and does not fall under a more specific heading such as 0404 10 (whey) or Chapter 21 (food preparations). USDA FSIS admissibility requirements apply to dairy products in this heading; consultation with a licensed customs broker is recommended given the residual nature of the category.
Track Products of Natural Milk Constituents (NESOI) and get alerts when trade data updates
Create a free account to build your watchlist
Milk protein concentrate is derived from whole milk by ultrafiltration and retains both casein and whey proteins, classifying under 0404901000. Whey protein concentrate is a by-product of cheese-making and classifies under 0404100500. The distinction turns on the protein source and processing method, and misclassification between these two lines is a common audit finding.
Line 0404905000 references Additional US Note 1 to Chapter 4, which sets out TRQ thresholds for certain dairy products not elsewhere specified. Importers must determine whether their product falls within the quota volume to apply the correct duty rate. Quota fill status should be verified with CBP before shipment.
Supplier Network
Get discovered by U.S. importers searching for HS 040490 — Products of Natural Milk Constituents (NESOI). Be the first supplier listed.
Imports
$33.9M
from 17 countries · YTD: $128.3M
Exports
$18.3M
Deficit of $15.6M (net importer)
Trade balance: deficit of $15.6M (net importer)
YTD: $128.3M imported (April 2026)
73 shipments/month
Monthly import values over time
Top U.S. entry points for this product, ranked by latest-month import value.