Tincal Crude Borax Ore from Mexico
Tincal is crude native borax found in Tibetan salt lakes (solid form), concentrated without brine separation for glassmaking. Classified in HTS 2528.00.00 as natural sodium borate, it's the historical source of refined borax. Supplied in lumps or ground form.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Document solid deposit origin to exclude brine-separated borates
• Impurity tolerance analysis prevents synthetic misclassification