- Sina Optical Co., Ltd.
- Address:44-34, Youido-dong, Youngdungpo-gu,
- EST Tech
- Address:2nd Floor, 50-5, Munjung, Songpa
- Sambo Hi Tech Co., Ltd.
- Address:616-15, Gansuk4-Dong, Namdong-Gu
- Park Systems Corp.
- Address:906-10,Iui-dong ,Yeongtong-gu, Suwon-si
- Telcoware
- Address:1708-2,Seocho-dong ,Seocho-gu
- I&G
- Address:Daewha B / D 5F, Sunwha dong 140-22, Jung gu
- ke neng
- Address:
- Modulab
- Address:
- N-BIOTEK
- Address:402-803 Techno-Park Yakdae-Dong Wonmi-Bu
- Telstar Hommel Corporation
- Address:455-2 Hyeongok-ri,Cheongbuk-myeon ,Pyeongtaek-si
- EWOO ENGINEERING CO.,LTD.
- Address:
- Kumyong Yamato Scale Co., Ltd.
- Address:694-14,Gojan-dong ,Namdong-gu
- K-GreenLife
- Address:pungmudong 637-5
- Charm & Ci
- Address:
- SAEHAN ENGINEERING CO
- Address:1102-2, NOWONDONG 3GA
- Neomotec Co., Ltd
- Address:203-9, Hangang Safevil, 733, Janghang-Dong
- OLOO Inc - NENT
- Address:
- From 30 Co., Ltd
- Address:401-58,Seogu-ri ,Dongtan-myeon ,Hwaseong-si
- Metex Co.
- Address:1005-3,Doksan-dong ,Geumcheon-gu
- Hwakwang Tarding Co., Ltd.
- Address:41,Cheongdam-dong ,Gangnam-gu