Tunnelbuilder welcomes SWEDFAN as a new advertiser .SWEDFAN undertake the design, calculations, manufacturing and supply of complete underground ventilation systems with heavy-duty high pressure axial tunnelling fans for airflows and flexible ventilation ducting for a total ventilation system. SWEDFAN’s manufacturing facilities are located in Sweden, Czech Republic and Shanghai, China. SWEDFAN ventilation systems are the highest possible pressure capacity together with low energy consumption and low noise. The fans are delivered with all necessary accessories such as silencers, frequency inverters, dust filters and cooling machines. For further information please visit their website http://www.swedfan.se/ . 19/17.