- Portworld
- Address:Ganmae-Ri 64-1, Gangcheon-Myeon
- Sang-A Msd Inc.
- Address:#107,Nae-dong ,Ojeong-gu, Bucheon-si
- Wisecube Co.,Ltd.
- Address:B-806-1 Woolim Lions-1 371-28 Gasan-dong
- woori plan
- Address:
- Wave Link Co., Ltd.
- Address:202-4,Anyang 7-dong ,Manan-gu, Anyang-si
- Sam Kwang System Co.,Ltd
- Address:438-2, Noijo-ri, Jori-eup, Paju-si
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