Details - iaf, the International Exhibition on Track Technology
CFT GmbH - Compact Filter Technic - Air-cooling machine (direct evaporator) in the Gotthard Base Tunnel during installation of the railway technology. | Facebook
CFT GmbH - Compact Filter Technic | Facebook
Euro-Khan.com
CFH Group Bundles Business Activities in the Ventilation Sector - tunnel
Innovative Containerised Shaft Ventilation System - YouTube