Za podsistem, ki je predmet postopka ES-verifikacije, mora naročnik sklepati pogodbe samo s proizvajalci, katerih dejavnosti, ki prispevajo k preverjanju projekta podsistema (načrtovanje, proizvodnja, montaža, namestitev), so predmet odobrenega sistema kakovosti za načrtovanje, proizvodnjo in pregled končnega proizvoda ter preskušanja, kot je določeno v točki 3, in ki je predmet nadzora, kot je določeno v točki 4.
For the subsystem, being subject of the EC verification procedure, the adjudicating entity must contract only with manufacturers, whose activities contributing to the subsystem project to be verified (design, manufacturing, assembling, installation) are subject to an approved quality system for design, manufacture and final product inspection and testing as specified in point 3 and which shall be subject to surveillance as specified in point 4.