Heptafluoropentene from China
Heptafluoropentene acts as a deposition precursor in chemical vapor deposition for fluorocarbon films. Classified HTS 2903.59.90.00 as unsaturated fluorinated acyclic hydrocarbon per Chapter 29 scope. Pure compound status confirmed by spectroscopic analysis.
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
• Submit process gas specification sheets showing moisture <10 ppm
• Include leak test certificates for cylinders per CGA C-6 standards
• Declare CVD manufacturing end-use to qualify for potential duty exemptions