- DIGITALSIGN CO LTD
- Established in 1996 as a forerunner of manufacturing LED sign boards Korea. With long experience, recently developed 8 color well mono and tri color. Digital sign's signboards were recommanded to supply all the public government office events qualified manufacturer, such ailroad / subway main ….
- Address:27-6, Sano-Dong
- HLW Co.,Ltd
- Address:15, Shindae-ri, Shilchon-eup,
- Werobo Co.,Ltd.
- Address:N22-5110, KAIST, 373-1 GUSEONG-DONG, YUSEONG-GU
- Se Young Hi Tech Co.,Ltd.
- Address:472-12, Mangwon 2-dong, Mapo-gu
- Bongoh Electronics Industrial Co., Ltd
- Address:474-36,Bangbae 2-dong ,Seocho-gu
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