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SITCSection 6
U.S. imports of woven synthetic filament fabric, mixed mainly with cotton (under 85% synthetic) (SITC 65318) totaled $1.3M in July 2026, traded with 28 countries.
Importers of Woven Synthetic Filament Fabric, Mixed Mainly with Cotton (Under 85% Synthetic) paid $262K in duties in July 2026 — an effective duty rate of 23% on $1.1M in dutiable value, based on actual customs collections rather than the published tariff schedule. Woven Synthetic Filament Fabric, Mixed Mainly with Cotton (Under 85% Synthetic) imports of $1.3M in July 2026 ran 47% above the year-to-date monthly average of $871K.
Last updated: July 2026 dataPoly-cotton blended woven fabrics — where synthetic filaments are present but fall below the 85% threshold and cotton is the principal secondary fiber — occupy this classification, reflecting the commercial importance of blended shirting, workwear, and home-textile constructions. The 'mixed mainly with cotton' qualifier is the decisive specification: if the secondary fiber is wool, viscose, or another material rather than cotton, a different heading applies. Importers should note that blended fabrics can be subject to both textile quota history considerations and Section 301 tariff exposure depending on the country of origin. Fiber-content certification from the mill is essential to substantiate the blend ratio at entry.
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359 shipments/mo
'Mixed mainly with cotton' means cotton is the predominant fiber among those other than the synthetic filament component. If a fabric contains 60% synthetic filament, 25% cotton, and 15% viscose, cotton is the largest secondary fiber, so the fabric would qualify as mixed mainly with cotton. If viscose exceeded cotton's share, the fabric would fall into a different blended-fabric classification.
For the filament-based blended fabrics in SITC 65318, no specific g/m² threshold is built into the classification itself — unlike the staple-fiber blended categories (e.g., SITC 65331/65332) where a 170 g/m² cutoff applies. However, at the HTS 10-digit level, weight limits may still differentiate duty rates, so importers should verify the applicable HTS subheadings for their specific fabric weight.
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Imports · July 2026
origin
India and Italy together supply 63% of it.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$1.3MYoY · Pro
Exports
$1.1MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.