CPV code 33952000 designates Transport equipment and auxiliary products to transportation in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
33952000 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 33950000 (Clinical forensics equipment and supplies).