Type de certificatCertification de processus d'applicationMenuiserie Aluminium (Construction Quality recognised scheme) Menuiserie PVC (Construction Quality recognised scheme) Certificat 322138V3.PDF 322139V3.PDF Gids 04-11 PVC vensters versie 080909.pdf Bouwbedrijf Mertens BPC-422-18587-CA-CER FR-31_12_2019.pdf Bouwbedrijf Mertens BPC-422-18587-CA-CER NL-31_12_2019.pdf