Glass Fiber Reinforced Insulation Paper Sheets from Japan
Composite sheets of paper layers adhered with fiberglass mesh reinforcement for electrical insulation backing in transformers. Falls under HTS 4807.00.92.00 as internally reinforced paper, no surface coating. Provides dielectric strength.
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
• Certify fiberglass as non-woven reinforcement to prevent plastics chapter misclassification
• Declare electrical end-use but emphasize paper as principal material
• Test for impregnation; any varnish coating shifts to 4811 or 8547 composites