PTFE Diaphragm Valve for Crystal Grower Fluid Control from China
A hand-operated diaphragm valve with PTFE (Teflon) body for corrosive chemical handling in Czochralski crystal pullers during silicon boule growth. Classified under HTS 8481.90.5000 as parts of other materials (plastics like PTFE) for hand-operated appliances in semiconductor processing.
Duty Rate — China → United States
20.5%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.157.5%Except as provided in headings 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 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(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
Import Tips
• Provide FDA or semiconductor-grade PTFE certification to confirm 'other materials' status
• Document end-use in wafer manufacturing to differentiate from general industrial valves