- Yongsan Chemical
- Sumitomo Seika
- Yoosung C&F
- SUMaterials
- Younghung Power plant
- SK E&C
- Taegwang PLANT社
- Silk Road Corporation
- Powuntec Inc.
- Sejin Tech
- POSCO Chemical
- SAMBO CORPORATION
- Samsung Corning Precision Material
- Shin An Grow Co.
- SH Energy Chemical
- Seoul City浄水処理場
- Samsung Fine Chemicals Co.,Ltd
- SC Engneering~Sumitomo Seika
- SAMPYO
- POSCO Gwangyang
- POSCO 光陽工場
- SI ENT/東西食品(Bupyong・Plant)
- Samsung Corning Precision Glass
- SK Chemical Urusan 工場
- Silkroad T&D/Tae-an工場
- Samsung Electro-Mechanics
- Samsung SDI
- NPK/Kumi 3工場
- OCI Company Ltd.
- Lafarge Halla Cement
- Moorim ERI Biomaterials
- LG Chemical_Iksan plant
- Plumbfast
- L&F Material
- LG MMA Corporation
- LG DOW Polycarbonate
- Lotte Chemical
- LG Chemical
- Kyung Ryun Eng Co.,LTD.
- MOORIM P&P Co.,Ltd