Styrene Foam Sign Blanks from Japan
Extruded polystyrene foam boards sold as blanks for outdoor signage and displays. 3921.11.00.00 for cellular sheets of styrene polymers used in advertising. Weatherproof surface.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Document as unfinished sheets, not signs, to stay in 3921
• Include styrene content lab reports
• Common error: classifying printed boards under 3920