- Samduk Hi-Tech Corp.
- 280SF chain,Round chain 3.5mm,280SF chain,Ball chian connector,Pearl necklace,HJ2174,hj1088,hj1057,Anchor ring necklace,Apple necklace,Cherry with crystal deco leaves necklace,Tirare Queen earrings,Tirare drop earrings,Sterling round stud,HJ2203,hj1265,hj.
- Address:127,Gwangjang-dong ,Gwangjin-gu
- Sin Mi Precision
- Shaft,Ball stud,Bolt/nut,cold forged Products.
- Address:1742-21,Songjeong-dong ,Gangseo-gu
- DBG Bearing
- bearing,rodend,yoke track roller,spherical plain,ball joint,stud track roller,needle roller bearing.
- Address:712-1, soto-ri, sangbuk-myeon
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