CPV code 73420000 designates Pre-feasibility study and technological demonstration in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
73420000 sits under 73400000 (Research and Development services on security and defence materials) and groups 6 more specific sub-codes. When classifying a tender, choose the narrowest code that still covers the full subject of the contract.