SK Group (Korean: SK그룹, 에스케이그룹) is the third largest conglomerate (chaebol) in South Korea. The SK Group is composed of 92 subsidiary and affiliate companies that share the SK brand and culture. It changed its name from Sunkyoung Group (Korean: 선경그룹) to SK Group in 1997. SK Holdings ranked 72nd in the 2009 Fortune Global 500.[1] SK Group has more than 30,000 employees who work from 113 offices worldwide. While its largest businesses are primarily involved in the chemical, petroleum and energy industries, it also has South Korea's largest wireless mobile phone service provider, SK Telecom, and provides services in construction, shipping, marketing, local telephone, high-speed Internet, and wireless broadband service WiBro. SK has recently further broadened its range of business to semiconductors, merging Hynix into SK Hynix.