[ Bureau de Gwanghwamun ]

22nd floor, Gwanghwamun Office Building, 92 Saemunan-ro, Jongno-gu, Seoul

[ Bureau de Gangnam ]

11th floor, 3M Tower, 10 Teheran-ro 20-gil, Gangnam-gu, Seoul

(E-mail) kds@big-tree.co.kr

(Office) +82-2 - 2183 - 0081 / (Direct) +82-10 - 2936 - 3580