2528 Borates, Natural, and Concentrates Thereof, Whether or not Calcined, and Natural Boric Acids Containing <= 85% of H3bo3 Calculated on the dry Weight (Excl. Borates Separated From Natural Brine)

2528 (01/1988-..) Borates, Natural, and Concentrates Thereof, Whether or not Calcined, and Natural Boric Acids Containing <= 85% of H3bo3 Calculated on the dry Weight (Excl. Borates Separated From Natural Brine) 25280000 (01/2012-..) Borates, Natural, and Concentrates Thereof, Whether or not Calcined, and Natural Boric Acids Containing <= 85% of H3bo3 Calculated on the dry Weight (Excl. Borates Separated From Natural Brine) 25281000 (01/1992-12/2011) Sodium Borates, Natural, and Concentrates Thereof, Whether or not Calcined (Excl. Sodium Borates Separated From Natural Brine) 25289000 (01/1992-12/2011) Borates, Natural, and Concentrates Thereof, Whether or not Calcined, and Natural Boric Acids Containing <= 85% of H3bo3 Calculated on the dry Weight (Excl. Sodium Borates and Concentrates Thereof and Borates Separated From Natural Brine)