8475.21.00.00/Fiber Preform Dehydration Oven/Japan

Fiber Preform Dehydration Oven from Japan

Oven removes hydroxyl impurities from soot preforms using chlorine gas at elevated temperatures, essential for low-loss optical fibers. Controlled humidity environment. Specialized under HTS 8475.21.00.00.

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

• Gas handling system certification for chlorine process

• OH content reduction proof via spectroscopy

• Sealed chamber pressure specs