HFC-125/HFC-143a Calibration Gas Mixture from Mexico
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 — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Include NIST-traceable certificate of analysis for customs valuation