CPV code 14621120 designates Ferro-chromium in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
14621120 is a leaf code — the most specific level of its branch — so it can be used directly as the main CPV code of a contract notice. If it does not quite fit, check the neighbouring codes under 14621100 (Non-ECSC ferro-alloys).