인증서 YOUNUS-ACCEL_KCC AMOGA-SAFER_KCC AMOGA-EXPRESS_KCC IMMOTALITY-ISO9000 YOUNUS_TWINS-KCC swing-mic Swing_CE super_mic smile_mic SDcard_mic SD_MIC MultiHUB_MIC multi_mic ISO14001 hubmulti_mic Dual_MIC dual_Ce combo_MIC Registration of Communication service business Certificate of Trademark Registration Company Registration Certificate of Membership for K.I.T.A 특허증 제 10-1224212 호 제 10-1064118 호 제 10-1092608 호 제 10-1270779 호