Czochralski Crystal Puller Furnace Chamber
A critical replaceable part in Czochralski crystal pullers used to grow monocrystalline silicon boules for semiconductor wafers. The furnace chamber provides the high-temperature controlled environment necessary for crystal growth and is a mechanical part without electrical features, not specified or included elsewhere in Chapter 84.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the chamber is presented as a part of a vacuum pump or furnace of heading 84.14
Parts of air or vacuum pumps, compressors and fans are classified in heading 84.14.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Confirm the furnace chamber is not a complete furnace of heading 84.14 or 85.14 — if it is a standalone furnace, it may be classified elsewhere
• Provide evidence that it is a part of a crystal puller machine
• Ensure no electrical heating elements are included to maintain classification under 8487
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