SK group (SK? HOLDINGS) is the third largest multinational enterprise in Korea, with energy, chemical industry and information and communication as two pillar industries, and its two enterprises have entered the global top 500. ? SK? Its subsidiaries are all over the world? 30,000? Many employees,? 124? Offices and subsidiaries. Ranked 57th among the top 500 enterprises in the world, with an annual sales income of $80.8 billion. SK ranked 57th in Fortune Global 500 in 20 13. SK Group's business in China began before 1992 China and South Korea established diplomatic relations. SK has more than 654.38 million employees in China, and its business covers about 40 regions in China.