Prosečne GPS koordinate za poštanski broj 571744: 19.551, 109.336
Spisak gradova:
>> Sandu Town/三都镇等 571744, Hainan/海南, Danzhou City/儋州市, GPS koordinate: 19.55069,109.33643
Spisak gradova:
>> Sandu Town/三都镇等 571744, Hainan/海南, Danzhou City/儋州市, GPS koordinate: 19.55069,109.33643