Helium-Neon Laser Plasma Tube from Japan
HeNe laser plasma tubes generate visible laser light through gas discharge excitation of helium-neon mixture. Used in alignment and metrology, they qualify as gas electron tubes under HTS 8540.89.0020.
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
• Mirror coating specs and gas pressure stability docs required
• Lifetime rating (hours) helps establish tube vs. complete laser status
• Optical bench mounting features affect parts classification