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Address : 6, Gureumdeuri-gil, Jeonui-myeon, Sejong-si (Gwanjeong-ri 202)
Tel : +82 (44)-715-5100
Fax : +82 (44)-715-5511
Email : SMS@sms-dk.com
Weekdays : 09:00~18:00 (closed on Saturdays, Sundays and national holidays)