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HSChapter 68
U.S. imports of plates, sheets & strips of agglomerated or reconstituted mica (HS 681410) totaled $1.5M in April 2026, traded with 16 countries.
Importers of Plates, Sheets & Strips of Agglomerated or Reconstituted Mica paid $362K in duties in April 2026 — an effective duty rate of 24% on $1.5M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataAgglomerated and reconstituted mica sheet products are engineered dielectric and thermal insulation materials widely used in electrical motors, heating elements, and high-voltage equipment. China dominates US import supply under this heading, with South Korea and Brazil also recorded as sources, reflecting the concentration of mica processing capacity in Asia. All imports enter under the single tariff line 6814100000, and Chinese-origin goods are subject to Section 301 tariffs — a meaningful cost factor given China's outsized share of global reconstituted mica production. Buyers should confirm whether the product is phlogopite- or muscovite-based, as this affects thermal performance specifications.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Both forms are manufactured from mica flakes or splittings bonded together, but 'reconstituted' mica typically refers to products made from mica paper (thin sheets of overlapping flakes) bonded with a resin or silicone binder, while 'agglomerated' mica uses larger fragments. For HTS purposes, both forms of plate, sheet, or strip fall under the single line 6814100000, so the distinction does not affect classification but does affect technical specifications relevant to end-use qualification.
China controls a large share of global mica processing and reconstituted mica sheet manufacturing, meaning that Section 301 tariff changes, export controls, or supply disruptions disproportionately affect US importers. South Korea and Brazil offer alternative sources, but their combined capacity is substantially smaller, and lead times for specialty grades can be longer. Buyers in the electrical insulation sector are advised to maintain safety stock or qualify secondary suppliers to manage this concentration risk.
Monthly import values over time
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| MEXICO | -- | $1.0M | +$1.0M |
| CHINA | $699K | $73K | -$626K |
| BELGIUM | $340K | -- | -$340K |
| SPAIN | -- | $258K | +$258K |
| KOREA, SOUTH | $238K | -- | -$238K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 6814100000 | PL SH STR OF AGGLMRTED OR RCNSTD MICA | $1.5M | 24.36% | $362K |
PL SH STR OF AGGLMRTED OR RCNSTD MICA
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 6814100000 | PL SH STR OF AGGLMRTED OR RCNSTD MICA | $2.0M |
PL SH STR OF AGGLMRTED OR RCNSTD MICA
42.9K kg
OTHR ARTS NESOI OF CMNT ETC
HS 681099
MARBLE, TRAVERTINE AND ALABASTER, WORKD, NESOI
HS 680291
WORDK MONUMENTAL OR BUILDING STONE, NESOI
HS 680299
GRANITE, NESOI
HS 680293
ABRASIVES ON A BASE MATERIAL OTH THN FABRC O PAPER
HS 680530
ARTICLES OF ASPHALT OR SIMILAR MATERIALS IN ROLLS
HS 680710
| State | Imports | Exports | Balance |
|---|---|---|---|
| New York | $169K | $398K | +$229K |
| Tennessee | -- | $553K | +$553K |
| New Hampshire | $395K | $3K | -$392K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| HILDAGO, TX | -- | $560K | +$560K |
| LONG BEACH, CA | $478K | -- | -$478K |
| JFK INTERNATIONAL AIRPORT, NY | $70K | $333K | +$262K |