Epitaxial Reactor Cold Wall System from Japan
Cold wall cooling assembly for MOCVD epitaxial reactors, maintaining chamber walls at stable low temperatures during high-heat thin film deposition on wafers. Falls under 8419.89.9540 as cooling equipment for semiconductor processing temperature management. Critical for layer uniformity.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Submit reactor chamber thermal profile data proving cold wall cooling necessity
• Classify as complete cooling system, not reactor part, to avoid 8479