- GMBY Foundry Co.Ltd.
- Address:Hyoja-dong 3-ga, Wansan-gu
- Hankookkijjun Metal Co.,Ltd.
- Address:
- UNIQUE ENG.
- Address:101-907, 134, Saemal-ro, Yeonsu-gu
- Daehan Special Metal
- Address:1434 Songgok-ri Dasan-myun
- Keumsung Precision Mold And Plastic Injection Ind Co.,Ltd
- Address:204-8,Paho-dong ,Dalseo-gu
- DDP TECH CO., LTD
- Address:1267-9 SI Hwa Factory Complex 2da 505
- Cor-Tek MIC Corporation
- Address:
- BuSung Eng,INC
- Address:B-202 Keumkang Hightech Valley, 133-1 SangDaewon-Dong, Jungwon-Gu
- GBA Korea Co., Ltd.
- Address:
- Daejin Metal Co., Ltd.
- Address:255
- S&T Dynamics
- Address:83, Daewon-dong
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