BETIS installs and maintains natural and mechanical smoke-extraction systems alongside roof-light, ventilation, cladding and waterproofing work, mainly on industrial and commercial buildings across Provence-Alpes-Côte d’Azur. It is certified under the CNPP Cert. APSAD service scheme I17 and F17, certificate 061/16/I17.F17, for the installation and maintenance of smoke-control systems.