Czochralski Crystal Puller Process Valve from Japan
Stainless steel process valve used in Czochralski method crystal growers to regulate argon and dopant gas flows during monocrystalline silicon boule production. Classified in HTS 8481.80.9050 as other valves for semiconductor wafer manufacturing pipes. Ensures contamination-free operation in high-temperature environments.
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%
Import Tips
• Provide OEM specs linking valve to crystal grower models for statistical note compliance
• Ensure helium leak test certifications in documentation to prove vacuum integrity