Dongsan Co., Ltd. was initiated through international bidding for its flagship business, Incheon International Airport's restaurant business. It also became a topic. Since then, for about 11 years, he has been successfully conducting a restaurant business at Beijing Capital International Airport Terminals 2 and 3, while Doosan Group proposed to operate a restaurant in the duty-free area of ​​Incheon International Airport and returned to Korea from 2008 to the present. For about 12 years, we have been running 4 large, medium, and small Korean/Japanese restaurants at Incheon International Airport, and in 2018, at the Centropolis Building of Jonggak Station at the proposal of Lotte Group, We are managing a total of 11 restaurants, including 4 restaurants and 3 other restaurants in Seoul.