Biogas Methane Membrane Separation Skid from Japan
Integrated skid with multiple membrane stages upgrades biogas by separating methane from CO2, H2S, and water vapor for pipeline-quality RNG. Falls under HTS 8421.39.0140 as gas separation equipment for renewable energy.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Specify biogas inlet composition (55-65% CH4) and outlet purity specs
• Certify H2S-resistant membrane materials for hazardous gas handling
• Coordinate with EPA RIN program documentation for renewable credits