Seoul office
서울시 노원구 상계1동 963-27 서원빌딩 (주)KC21 (139201)
Tel:+82-2-951-0654 , Fax:+82-2-951-0657
  Beijing office
NO.411, A Building, Yeqing Tower, NO.9, Wangjing Beilu, Chaoyang District, Beijing, China (100102)
Tel:+86-10-6439-2840~1 , Fax:+86-10-6439-2842
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