High-Purity Doped Poly-Si Wafers for MEMS Sensors from China
High-purity polycrystalline silicon wafers doped for micro-electro-mechanical systems (MEMS) like accelerometers and gyroscopes. Under HTS 3818.00.0020 as doped chemical elements in electronic wafer forms. Doping facilitates precise control in sensor microstructures.
Duty Rate — China → United States
50%
Rate breakdown
9903.91.0550%Effective with respect to entries on or after January 1, 2025, articles the product of China, as provided for in subdivision (f) of U.S. note 31 to this subchapter
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Check EAR/ITAR export controls even for imports; declare technology node if applicable
• Require particle count certifications (<10 particles >0.5um) for clean import