Helium-Neon Laser Plasma Tube from China
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 — China → United States
41.2%
Rate breakdown
9903.88.0125%Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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