Eurostat, Luxembourg. 25281000 (01/1992-12/2011) Sodium borates, natural, and concentrates thereof, whether or not calcined (excl. sodium borates separated from natural brine): CN 25281000 /Exports /Unit = Prices (Euro/ton) /Partner: Hong Kong /Reporter: European Union /25281000:Sodium Borates, Natural, and Concentrates Thereof, Whether or not Calcined (Excl. Sodium Borates Separated From Natural Brine).