CPV code 45236210 designates Flatwork for children's play area in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
45236210 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 45236200 (Flatwork for recreation installations).