KOA-SHA Media (Thailand) Co., Ltd. is the joint-venture advertising agency between Koa-sha Inc. (Japan) and 365 Public Company (TSF) to manage the Airport Rail Link's Advertising Space 6,837 sq.m where 5,004.21 sq.m at Phayathai, Ratchaprarob, Makkasan, Ramkhamhaeng, Huamark, Baantubchang, Ladkrabang and Suvarnabhumi station and another 1,832.79 sq.m where inside train and train's body (outside) of the City Line Train and Express Line Train.