- DUCKSUNG CO LTD
- Address:Chaesin-Dong 588
- STC Ltd.,Korea
- Address:Jangwon Greenvil 101, # 774-16, Bumeo 1 Dong, Su Sung Ku
- Korea Nickel Corporation
- Address:YONGPUNG B/D,142, Nonhyeon 1-dong ,Gangnam-gu
- General Plumbum
- Address:48 Yeouido-dong
- EMAX INC CO.,LTD
- Address:609-5 Wolpyeong-ri Hwangnyong-myeon
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