Low-Soda Alumina for Spark Plugs from China
Special low-sodium aluminum oxide for ceramic spark plug insulators. Chemically defined under HTS 2818.20.00.00.
Duty Rate — China → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Specify Na2O <0.1% content critical for classification
• Ship as powder; finished insulators to Chapter 85
• Automotive end-use declarations helpful but not controlling