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HSChapter 32
U.S. imports of vitrifiable enamels, glazes & engobes (slips) (HS 320720) totaled $5.4M in July 2026, traded with 19 countries.
Importers of Vitrifiable Enamels, Glazes & Engobes (Slips) paid $224K in duties in July 2026 — an effective duty rate of 13% on $1.8M in dutiable value, based on actual customs collections rather than the published tariff schedule. Vitrifiable Enamels, Glazes & Engobes (Slips) imports of $5.4M in July 2026 ran 30% above the year-to-date monthly average of $4.2M.
Last updated: July 2026 dataVitrifiable enamels, glazes, and engobes (slips) — classified under tariff line 3207200000 — are glass-forming preparations applied to ceramic, metal, or glass substrates and fused at high temperatures to create decorative or protective surfaces. Mexico leads US supply, followed by Spain and Italy, the latter two reflecting Europe's deep tradition in architectural and decorative tile production. The distinction between an engobe (a clay-based slip applied before firing) and a glaze (a glass-forming coating) matters for technical specification but not for HTS classification, as both fall within this single line.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
209 shipments/mo
A vitrifiable enamel or glaze is specifically designed to fuse into a glassy layer when fired at elevated temperatures, forming a permanent bond with the substrate. Non-vitrifiable coatings that cure or dry without glass formation classify elsewhere — typically under heading 3208 or 3209 as paints or varnishes. The product's technical data sheet confirming its firing temperature and glass-forming chemistry is the key classification support.
Yes. Both engobes (clay-based slips) and vitrifiable glazes fall within 3207200000, so a mixed shipment of these ceramic preparation types can be entered under a single tariff line. Importers should ensure the commercial invoice clearly describes each product type to facilitate accurate CBP review.
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Subheading 2 of 4 in heading 3207
Subheading 320720 · $5.4M of $18.7M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 3207200000 | Vitrifiable Enamels & Glazes,Engobes(Slips),Etc | $5.4M | 4.14% | 32.94% | $224K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3207200000 | Vitrifiable Enamels & Glazes,Engobes(Slips),Etc | $4.4M |
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.
ImportsExports
Imports
$5.4MYoY · Pro
Exports
$4.4MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Mexico and Spain together supply 76% of it.
customs district
destination
entry
rate provision · imports
67.1% enters free of duty; the effective duty rate is 4.14%.