- Y.H.B.Co.,Ltd.
- Address:270-48, Oseon-dong, Gwangsan-gu
- Echo Trading Company
- Address:343 Daerim-dong, Yeongdeungpo-gu,
- SAMHOON CO LTD
- Address:# 577-1 Songrea2-Dong
- Alpha Coporation
- Address:#501, Tongkwang B/D, 20 Bomun-dong 4-ga, Seongbuk-gu
- Bada Tek Co.,Ltd.
- Address:Rm3307,Korea Trade Tower, Samseong 1-dong ,Gangnam-gu
- Jungsan Enterprise Co., Ltd.
- Address:1095-17,Joil-ri ,Samdong-myeon ,Ulju-gun
- Sam Yang Metal Co.,Ltd
- Address:1500-13,Dadae-dong ,Saha-gu