Caprock Native Sulfur from Japan
Native sulfur from limestone caprock formations above salt domes, mined via conventional methods. Under HTS 2503.00.00.90 as other non-sublimed, non-precipitated sulfur.
Duty Rate — Japan → United States
0%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Include stratigraphic reports proving caprock origin versus synthetic
• Avoid oversized blocks over 50kg that resemble cast precipitated sulfur
• Test for limestone impurities exceeding 5% to prevent 2530 reclassification