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SK Telecom is South Korea's largest wireless telecom operator, with 31 million mobile customers. The firm also owns SK Broadband (formerly Hanaro Telecom), which has 6.9 million broadband customers and 9.5 million pay TV customers (6.8 million IPTV and 2.7 million Cable TV). While the firm also purchased stakes in businesses in security and semiconductor memory production as well as developing e-commerce and internet platform businesses, these were all spun off into the separate, SK Square business in November 2021. The company was formed after SK Group purchased KT's mobile business in 1994.
MasTec is a leading infrastructure construction company operating mainly in North America across a range of industries. The company's primary activities include the engineering, building, installation, maintenance, and upgrade of communications, oil and gas, utility, renewable energy, and other infrastructure. MasTec reports its results under five reportable segments: 1) communications; 2) clean energy and infrastructure; 3) oil and gas; 4) power delivery, and 5) other.