http://www.gsitm.com https://www.facebook.com/GSITM As a GS Group IT Service expert company, GS ITM provides a variety of exc ... ellent solutions that ultimately gives their customers the competitive edge to succeed. GS Group is the 8th largest conglomerate in Korea and its revenue is 89 Billion USD in 2012. GS ITM develops and operates IT systems of GS Group's affiliates including GS Energy, GS Retail, GS SHOP and GS Caltex in Korea including Yeosu Complex, which is the 4th largest refinery in the world. GS ITM also provides more than 10,000 franchise stores with IT Service such as POS and Legacy System. - GS Retail (7,500 stores such as CVS, drug store, supermarket) - GS Caltex (3,400 gas stations) - GS SHOP (Korea No.1 home shopping channel / internet shopping mall) read more