Liquid Helium for Cryogenic Research from China
Cryogenically liquefied helium (-269°C) in insulated dewars for superconductivity experiments and dilution refrigerators. Remains under HTS 2804.29.0010 as the elemental rare gas in liquid state.
Duty Rate — China → United States
28.7%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 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(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Use UN1970 markings for liquid helium transport; include vent system specs
• Declare helium-3 isotope content if enriched, as it affects EAR licensing
• Avoid delays by pre-notifying ports about cryogenic requirements