The tariff classification of nickel niobium pieces from Russia
The tariff classification of germanium ingots from China
The tariff classification of evaporation materials from China
Applicability of subheadings 9802.00.50 and 9802.00.60
The tariff classification of germanium blanks from China
The tariff classification of Hafnium Dioxide and Electrolytic Hafnium Powder from Ukraine
The tariff classification of molybdenum and niobium from China
Substitution, unused merchandise drawback; commercial interchangeability; 19 U.S.C. § 1313(j)(2); 19 C.F.R. § 191.32(c); rhenium pellets