- YECO KOREA COMPANY
- Address:502-1304 Jungdentown Jungja Bundang
- AVETEC
- Address:703, Theoville 1355-17, Secho-Dong, Secho-Gu
- BHL SNT Co.,Ltd.
- Address:13,196Beon-gil,Oksan-ro,Wonmi-gu
- MKR
- Address:ga Shandong
- STC Ltd.,Korea
- Address:Jangwon Greenvil 101, # 774-16, Bumeo 1 Dong, Su Sung Ku
- PSC Co.,Ltd
- Address:# 1123 Yongbierchunga, 75 Naesu-Dong Jongno-Gu Seoul Korea
- S K Biotech Inc.
- Address:Haengbok Bldg. 3rd. Floor 1142-30 Kuwol-Dong Namdong-Ku
- Sj Wire Co.,Ltd.
- Address:143-6, Gwangmyeong 3-dong,
- NOA METALS
- Address:Baeksok-dong
- komong international trading Co.,ltd
- Address:241 / Mannyeon officetel 909
- Global Ductile Iron Pipe Co.,Ltd
- Address:2302-101, dongwon apt, sasang
- Parameet Int'l co.
- Address:526-6 Yeounsu Gu, Yeounsu Dong
- Seabros Int'l Corp.
- Address:1070-19, Gil Bldg. 401, gileumdong, sungbuk-ku
- Yesteel Industrial
- Address:Room No.514, Ansung Building(A-dong),410-13, Shindorim-dong, Guro-gu
- Dawoo World Corp.
- Address:
- KODO COPPER TUBE MFG CO LTD
- Address:4MA-804 Shihwa Industrial Complex, Sunggok-dong
- Withusever Engineering
- Address:
- Baran Technology Co., Ltd.
- Address:38-3 Eoeun-Li Jangan-Myun
- Ducksan
- Address:Opo Munhyungri 745-3
- Hyosung Coporation
- Address:235, Banpo-daero, Seocho-gu