한편 스탬프와 스탬프 책자는 1호선 9개역, 2호선 7개역, 3호선 7개역 총 23개역에 비치되어 있다.
Meanwhile, stamp and stamp booklets are available at nine stations on Line 1, seven stations on Line 2, and seven stations on Line 3, a total of 23 stations.