- HEUNG IL METAL CO., LTD.
- Address:720-1, Wonsi-dong, Danwon-gu
- BHL SNT Co.,Ltd.
- Address:13,196Beon-gil,Oksan-ro,Wonmi-gu
- DAWON INTERNAIONAL
- Address:239 daekyungofficetel 81-1 5-ga yeongdeungpo-dong
- Taewon Industial Co., Ltd.
- Address:122-2 Ojun-Dong
- SEOWON CO.,LTD
- Address:402-3 Mongnae-dong
- Guri Industrial Co.,Ltd
- Address:578 Wolha-ri, Seo-myun,
- cheongwoo tech
- Address:816-6 Osikdo-dong
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