- se young engineering co.
- Address:Rm716, River Tower Officetel 94-119, Youngdeungpo-dong 2ga, Youngdeungpo-ku,
- TOP DRILL INTERNATIONAL CO LTD
- Address:3Ba-120, Sihwa Industrial Complex, 2182-16, Jeongwang-dong
- Osg Korea Corporation
- Address:358-48,Galsan-dong ,Dalseo-gu
- Dongshin Diamond Industral Co., Ltd.
- Address:770, Deungwon-ri, Jori-eup, Paju-si
- Prowin Corporation
- Address:#42-9, Wonchang-dong, Seo-ku,
- LETS Trading Company
- Address:5-208 kongkusangka, 289-1 Daehwa-dong, Daeduck-ku
- Taeshin Heavy Ind. Cp., Ltd.
- Address:577-1,Dongpyeong-ri,Gunseo-myeon ,Okcheon-gun
- Apex Construction Co., Ltd
- Address:2nd Floor, #468 Yatapdong, Bundanggu
- Hanjin Drilling Co., Ltd.
- Address:1612 Jidong 76 Soongin-Dong, Jongno-Gu
- Dream diamond tools.co
- Address:117 yulam ri paltan-myun
- Diatop Sama Co., Ltd.
- Address:1062,Woram-dong ,Dalseo-gu
- Sung Kwang iron ind. Co.
- Address:No.1042-1,Chim-San1Dong,Buk Gu,Tae Gu,KOREA(Zip Code : 702051)
- Won Gong Machinery Co.,Ltd.
- Address:1160,Hadan-dong ,Saha-gu
- Euratec Co.,Ltd
- Address:A/501,ANSUNG B/D, Sindorim-dong ,Guro-gu
- CENTRO CORPORATION
- Address:# 229, Dong Moon Tower II, 1324 Baeksuk-Dong, Ilsandong-gu
- goodplus
- Address:C-32-125 Machine / Tools Complex
- Daeseung International Co., Ltd.
- Address:3f, Jeongwon B/D,1566-8 Seocho-dong, Seocho-gu
- Deduck corporation
- Address:1462-2, # 606, Guwol-Dong, Namdong-Gu
- Km Tech
- Address:#195-5, Chungchundong, Bupyunggu
- Kyung Jin International, Ltd.
- Address: