- HYUNDAI STEEL
- SeAH CSS Corp.
- HYUNDAI SPECIALSTEEL
- DONGIL INDUSTRIES CO., LTD.
- DONGIL STEEL CO., LTD.
- KJ STEEL
(Kwang Jin Ind. Co., Ltd.)
- DONGIL STEEL
- MANHO ROPE & WIRE LTD.
- YOUNGHEUNG IRON & STEEL
- ARCELORMITTAL
(Europe + South America)
- ABS (Italy)
- DSS (Ukraine)
- MITSUBISHI STEEL
CO.,LTD. (Japan)
- jfe steel(Japan)
- daido steel(Japan)
- godo steel(Japan)
- sanyo special steel(Japan)
- DAYE SPECIAL STEEL
CO.,LTD. (China)
- XINCHENG SPECAIL STEEL
CO.,LTD. (China)
- SHIJIAZHUANG IRON &
STEEL CO.,LTD. (China)
- BENXI IRON AND STEEL
CO.,LTD. (China)
- NANJING IRON AND
STEELCO.,LTD. (China)
- QILU SPECIAL STEEL
CO.,LTD. (China)
-