Heliox to supply charging systems for VDL buses in Hague, Netherlands December 19, 2018 | Europe Company News Heliox has secured a contract from HTM Personenvervoer, the public transport operator in Hague, to supply six fast charging systems for nine electric buses supplied by VDL Bus & Coach (VDL). The c... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password