- Sekang Industry Co.Ltd.
- Address:Shinseo-dong 637-7
- Sodiff Advanced Meterials Co., Ltd
- Address:60-5,Sangjul-dong ,Yeongju-si
- Dong Yang Mwtallurgic Ind.Co Ltd.
- Address:370-54 SHINPYONG-DONG,Sinpyeong-dong ,Saha-gu
- SEJIN METAL CO.,LTD
- Address:Shimae Dong
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