SK Materials Co., Ltd. manufactures and distributes specialty gases and advanced materials for semiconductors, displays, batteries, and related high-tech industries worldwide. The company produces cleaning gases including nitrogen trifluoride (NF3); deposition gases such as tungsten hexafluoride (WF6), monosilane (SiH4), disilane (Si2H6), dichlorosilane (SiH2Cl2), and monochlorosilane; etching gases like fluoromethane, hexafluorobutadiene, difluoromethane, and trifluoromethane; industrial gases comprising oxygen, nitrogen, and argon; precursors; wet chemical solutions; and high-purity gases such as krypton, silicon tetrachloride, and helium; while also offering integrated services for gas and IT material supply, logistics, and quality upgrades. Founded in 1988 and headquartered in Yeongju-si, South Korea, with operations in Asia including China and subsidiaries like SK Trichem, SK Showa Denko, SK Materials Performance, SK Materials JNC, and SK Materials Renewtech, it changed its name from OCI Materials Co., Ltd. to SK Materials Co., Ltd. in February 2016 and operates under SK Inc. Materials since its 2021 merger. Recent developments include Hahn & Co. No. 30 Co., Ltd. completing the acquisition of an 85% stake from SK Inc. for KRW 2.6 trillion in March 2025; receipt of KRW 20 billion in funding in May 2025; expansions into battery anode materials via SK Materials Group 14 Inc. established in 2021 and silicon anode production starting in South Korea in 2024; entry into photoresist materials through SK Materials Performance Inc. in 2020; OLED materials via SK Materials JNC Inc. in 2020; and acquisition of Hanyu Chemical (now SK Materials Renewtech) in 2019 for industrial CO2 market entry.