- Sam Kwang System Co.,Ltd
- Address:438-2, Noijo-ri, Jori-eup, Paju-si
- Sirius Co., Ltd.
- Address:Suit 602, Venture Center, 169-1
- KCS Co. Ltd
- Address:312-1 Sinwol-Ri, Chowol-Up,
- SMART LED
- Address:
- TECHSIGN LIGHT PANEL CO., LTD.
- Address:# 2, 69-3, Sangdaewon-dong, Jungwon-gu
- Sam Bo Co., Ltd.
- Address:
- Bumkoo industrial CO., LTD
- Address:
- RAONHAJE CO.,LTD.
- Address:272-12, Dangwol-ro, Onsan-eup
- POLYVISION CO.,LTD
- Address:45-4 Daeyui-ri, Bugi-myeon
- NOV INTERNATIONAL
- Address:201, Samsung B / D, 34-7, Samjeon, Songpa