Services Techniques DHG Ltd was created in 1993 by Mr. Claude Demers, formerly employed by Canadian National in Montreal. His numerous years of experience as an electrician have allowed him to build an unequivocal reputation in the railway industry. In 1995, his son, Stéphane Demers became president of the company. As head of the company since then, he has surrounded himself with a strong team which has contributed to the success and quality of services offered by this expanding enterprise.