website
POSCO Steel Service & Sales Co., Ltd
82-2-3469-5000 82-2-3469-6700 webmaster@posteel.co.kr Posteel Tower 735-3, Yeoksam-dong Gangnam-gu, Seoul 135-080. Korea
website
POSCO Engineering & Construction Co., Ltd
82-54-280-3114 82-54-280-3651 webmaster@sjpna.co.kr 568-1 Koedong-dong, Nam-gu, Pohang, Kyongsangbuk-do 790-600 Korea
website
POSDATA CO., Ltd
82-31-779-2114 82-31-779-2300 posmaster@posdata.co.kr 276-2 Seohyun-dong, Bundang-gu, Sungnam-si, Kyunggi-do 463-775, Korea
website
POSCO Research Institute
82-2-3457-8000 82-2-3457-8880 webmaster@posri.re.kr POSRI Building 147 Samsung-dong Gangnam-gu, Seoul 135-090 Korea
website
POSCON Corporation
82-54-280-1114 82-54-278-5774 webmaster@poscon.co.kr 606 Ho-dong, Nam-gu, Pohang, Kyongsangbuk-do 790-719 Korea
website
POSCO Machinery Engineering Co., Ltd.
82-54-279-7114 82-54-279-7999 webmaster@posmec.co.kr 322-1 Changhung-dong, Nam-gu, Pohang, Kyongsangbuk-do 790-714 Korea
website
POS-A. C. Co., Ltd
82-2-3457-3700 82-2-3457-3898 young@posac.co.kr POSCO Center 892, Daechi 4 dong, Gangnam-gu, Seoul 135-777 Korea
website
POSCO C&C Co., Ltd.
82-54-280-6114 82-54-285-9009 master@poscocnc.com 470 changhung-dong, Nam-gu, Pohang, Kyongsangbuk-do 790-240 Korea
website
POSCO Specialty Steel Co.,Ltd.
82-55-269-6114 82-55-269-6901 cyber@cssteel.co.kr 66 Sinchon-dong, Changwon Kyongsangnam-do 641-370 Korea
website
POSCO Refractories & Environment Co., Ltd.
82-54-290-0114 82-54-292-3417 posrecweb@posrec.co.kr 1-143 Chungrim-dong, Nam-gu, Pohang, Kyongsangbuk-do 790-836 Korea
website
POSCO Machinery Co., Ltd.
82-61-798-3114 82-61-792-1072 posmweb@posm.co.kr 1656-4 Taein-dong, Gwangyang Chollanam-do 545-885 Korea
SEUNGJU COUNTRY CLUB
82-61-740-8000 82-61-743-9007 webmaster@sjcc.co.kr San 177, Ohgok-ri SangSa-myeon Suncheon-city JeonLaNam-do, Korea
Postech Venture Capital Co., Ltd
82-54-279-8484 82-54-279-8489 pvcc@pvcc.co.kr San 31 Hyoja-dong, Nam-gu, Pohang, Kyongsangbuk-do 790-784 Korea
RIST
82-54-279-6333 82-54-279-6099 webmaster@rist.co.kr San 32 Hyoja-dong, Nam-gu, Pohang, Kyongsangbuk-do, Korea
website
POSCO Terminal Co., Ltd.
82-61-793-7411 82-61-790-6386 kim3204@poscoterminal.co.kr Gwang Yang CTS Yaed, 861, Geumho-dong GwangYang-City, Jeonnam, Korea
website
POSCO Power Corporation
82-2-3469-5909 82-2-3469-5999 webmaster@poscopower.co.kr posteel tower 21st FI, 735-3, Yeoksam-dong,Gangnam-gu,Seoul 135-080 Korea
POSMate
82-2-528-2960~5 82-2-567-5461 webmaster@dongwoosv.co.kr Haesung 1 Bldg 8th Fl, Daechi 3 dong, Gangnam-gu, Seoul 135-777 Korea
website
SAMJUNG P&A Co., Ltd.
82-54-280-8114 82-54-280-8301 webmaster@sjpna.co.kr 967 Koedong-dong, Nam-gu, Pohang, Kyongsangbuk-do 790-300 Korea
SNNC
82-61-797-9114 82-61-797-9250 webmaster@snnc.co.kr 700, Geumho-dong GwangYang-City, Jeonnam, Korea
POSWITH
82-54-220-0369 82-54-220-7699 5 dongchon-dong, Nam-gu, Pohang, Kyongsangbuk-do 790-300 Korea