Refined Gold Sponge from Mexico
Porous gold sponge (99.9% pure) produced from chemical precipitation, before final casting. Classified in HTS 7108.12.50 as other unwrought form, non-powder, non-monetary. Used in dental and jewelry alloying.
Duty Rate — Mexico → United States
4.1%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Include production process description showing sponge formation, not powder
• Hallmark purity stamps required for customs valuation