Semiconductor Wafer Slicing Turbine Spindle from China
Inner diameter diamond saw turbine spindles rotate at 30,000+ RPM to slice ultra-thin wafers (25-150μm) from silicon boules with minimal subsurface damage. HTS 8411.99.90 covers these as other gas turbine parts specifically for semiconductor wafer manufacturing equipment. Precision speed control prevents crystal lattice damage during kerfless slicing.
Duty Rate — China → United States
37.4%
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
9903.88.0125%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]
Import Tips
• Specify diamond blade specifications (ID saw, kerf width <100μm) and achieved wafer thickness uniformity
• Provide vibration analysis data showing <0.1μm runout essential for semiconductor wafer quality
• Classify as complete slicing machine parts, not standalone turbine components to maintain 84.11 status