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8421.39.01.90/Odor Control Biofilter Module/Japan

Odor Control Biofilter Module from Japan

A biological filter using microbial beds to degrade odorous gases like H2S in wastewater treatment plants. Classified in HTS 8421.39.0190 for other gas purifying machinery employing biofiltration.

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

• Include microbial media composition and VOC/H2S removal efficiency certifications

• Document moisture control systems; humidification features must not dominate function