HFC-125/HFC-143a Calibration Gas Mixture from China
No, pure: Separate HFC-125 cylinder for gas chromatography calibration standards. Chemically defined per chapter note 2(a), classified HTS 2903.44.10.
Duty Rate — China → United States
16.2%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Include NIST-traceable certificate of analysis for customs valuation