- Sang Jin Development Co., Ltd.
- Grating Machine,Platform Grate,Trench Grate,Noise Barrier,Hot Dip Galvanizing.
- Address:B19-8-1,Seonggok-dong ,Danwon-gu, Ansan-si
- Dong Sung Jin Heung Co., Ltd.
- Noise Barrier Division,Cable Trays Division,Rental Division,Road Facilities Division,Construction Materials Division,Cable Trays Division.
- Address:630-88, Jeongok-ri, Seosin-myeon
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