SK Inc., together with its subsidiaries, engages in petroleum refining, telecommunications, wholesale and retail, chemicals, construction, and other businesses in Korea. It is involved in city gas and power generation; gas stations; sale of asphalt; energy business; resource development; LNG business; electricity and other electric wire installation; new regeneration; and hydrogen business. The company also manufactures and sells chemicals and petrochemicals; lubricant oils; separators for secondary cells; lithium batteries; storage batteries; industrial gas; non-memory and other electronic integrated circuit; household appliances; video and audio equipment; electronic books; steel; semiconductor component; telecommunication equipment; automotive products and parts; biodegradable plastic materials; organic light emitting diode material; silicon wafer; pharmaceuticals; and electric vehicle chargers. In addition, it provides insurance; management consulting; battery reuse/recycle; carbon collection and storage-related; internet portal; information gathering; telecommunication; equipment repair; AI solution; publication and telemarketing; brokerage; car sharing; office support; and other financial services. Further, the company engages in information and communication facilities management; broadcasting program production; databases and online information; system software development and supply; and quantum information and communication activities. Additionally, it is involved in cargo transport shipment and logistics consulting; e-commerce retail; real estate development; sewage treatment plants; waste incineration and disposal; solar power generation; construction of wind and solar power facilities; warehouse operations; landscaping and planting; and operation of condos, resorts, and golf clubs. The company was formerly known as SK Holdings Co., Ltd and changed its name to SK Inc. in March 2021. SK Inc. was founded in 1991 and is headquartered in Seoul, South Korea.