On Jul 24, 2018 Mr. Munehisa Okamoto, the Managing Director and Mr. Naret Boonnamsong General Manager, Maintenance Division signed the memorandum of understanding with BEM (Bangkok Expressway and Metro PLC.), Dr. Sombat Kitjalak, Managing Director of BEM for the purpose of installing Mitsubishi elevators and escalators for the blue line Hualampong-Bangsue.