Prosečne GPS koordinate za poštanski broj 423-721: 37.491, 126.868
Spisak gradova:
>> Cheolsan 1(il)-dong/철산1동 423-721, Gyeonggi-do/경기, Gwangmyeong-si/광명시, Gwangbokhyeondaeapateu/광복현대아파트, GPS koordinate: 37.49073,126.86784
Spisak gradova:
>> Cheolsan 1(il)-dong/철산1동 423-721, Gyeonggi-do/경기, Gwangmyeong-si/광명시, Gwangbokhyeondaeapateu/광복현대아파트, GPS koordinate: 37.49073,126.86784