- Tokai Carbon Korea Co., Ltd
- Address:271-2,GYERUK-RI, Miyang-myeon ,Anseong-si
- XYLON
- Address:Sihwa Commercial Center 4-203
- Jeil E&S Co.,Ltd
- Address:YUSAN-DONG YANGSAN CITY,Yusan-dong ,Yangsan-si
- Phil Corporation
- Address:#801-2, Gayangtechno Town, 1487, Gayng3-Dong, Gangseo-Gu
- Komex Carbon Corporation
- Address:219-1 Sinneung-ri,Yangchon-ri ,Seoun-myeon ,Anseong-si
- Dong Bong Carbon Co., Ltd.
- Address:38-8,Gujang-ri,Paltan-myeon ,Hwaseong-si
- Global Circuit Co.,Ltd.
- Address:18-19BL, BanWol industrial Complex 610-4, Songgok-Dong
- Dong Lin Co., Ltd
- Address:1349-20,Doeksin-ri ,Onsan-eup ,Ulju-gun
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