CPC Vers. 1.1 (8), subclasses 41112-41115: ferro-manganese, ferro-chromium, ferro-nickel and other ferro-alloys.
Source
United Nations (2003a). Central Product Classification (CPC). Version 1.1. Series M, No. 77, Ver. 1.1 (United Nations publication, Sales No. E.03.XVII.3).
