Hyundai Rotem to develop hydrogen trams in Ulsan, South Korea August 15, 2020 | Asia Pacific News South Korea-based Hyundai Rotem has signed a memorandum of understanding (MoU) to develop hydrogen trams. These will be the first hydrogen trams in South Korea and will be deployed in Ulsan. The deplo... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password