- GMBY Foundry Co.Ltd.
- Address:Hyoja-dong 3-ga, Wansan-gu
- Buem Steel Co., Ltd.
- Address:Pohang Steel Industry 4Block, 187-6, 130 Dongkuk-ro, Ocheon-eup, Nam-gu
- Hasuh Industries Corporation
- Address:1066 Daepo-ri Dong-myeon
- Younghae Engineering Co., Ltd.
- Address:Shinil Bldg. 4th floor, 425 Tehran St., Gangnam-gu
- TAE EUN CORP
- Address:207Daedong officetel, # 83-3, 3-Ga, MullaemDong, Yeoungdeungpo-Gu
- Hankookkijjun Metal Co.,Ltd.
- Address:
- Unit Industry Co., Ltd
- Address:# 459-40, Gasan-Dong, Keumcheon-Gu
- UNIQUE ENG.
- Address:101-907, 134, Saemal-ro, Yeonsu-gu
- Daehan Special Metal
- Address:1434 Songgok-ri Dasan-myun
- Osung parking Co.,Ltd
- Address:Rm 203rd, Anyangmegavellay, # 799 Kwanyang-Dong
- 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
- Neoma Inc.
- Address:No.113, 722 Kojandong, Namdongku
- Cor-Tek MIC Corporation
- Address:
- BuSung Eng,INC
- Address:B-202 Keumkang Hightech Valley, 133-1 SangDaewon-Dong, Jungwon-Gu
- TPK Co.,Ltd
- Address:1209, Jaesong-Dong, Haeundae-Gu
- GBA Korea Co., Ltd.
- Address:
- Daejin Metal Co., Ltd.
- Address:255
- YCP
- Address:1089-3, Kuwol-3dong,
- S&T Dynamics
- Address:83, Daewon-dong