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2529.30.00.50/Nepheline Syenite for Fiberglass/Japan

Nepheline Syenite for Fiberglass from Japan

Low-boron nepheline syenite for E-glass fiberglass reinforcement production. Provides stable alumina-silica ratio for fiber durability. HTS 2529.30.0050 'other' nepheline selected for boron <50ppm specification.

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%
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Import Tips

• ICP-MS analysis confirming B2O3 <50ppm prevents borosilicate confusion

• Fusion temp 1450-1480°C verified by thermal analysis

• Silica/alumina ratio 4.5-5.0 maintained within natural nepheline range

Nepheline Syenite for Fiberglass from Japan — Import Duty Rate | HTS 2529.30.00.50