SK Materials Co., Ltd. acquired Happy Companion Co., Ltd.

SK Materials Co Ltd, formerly OCI Materials Co Ltd, is a Korea-based company engaged in the manufacture and sale of special gas special gas and industrial gas. The Company is engaged in the manufacturing business of special gases used in the manufacturing process of semiconductors and display panels, and the industrial gas manufacturing business that produces oxygen, nitrogen, argon, and carbon dioxide gases. The Company mainly produces nitrogen trifluoride (NF3), which is injected to remove any residues on the internal walls of chemical vapor deposition (CVD) chamber; silane (SiH4), which is used to deposit silicon on wafer in semiconductors and to deposit silicon on TFT on top of glass substrates for TFT-LCD; tungsten hexafluoride (WF6), which makes contact plugs during CVD process, as well as dichlorosilane (DCS), which is silicon precursor gas used in combination with ammonia for SiH4 CVD and for deposition of epitaxial silicon.