Samsung Electronics is set to introduce South Korea-made mask blanks into its extreme ultraviolet (EUV) process starting as early as the second quarter of 2026. According to ET News and The Elec, Samsung is in the final evaluation stages of its EUV mask blanks with local supplier S&S Tech and is expected to be completed by January 2026, or by February at the latest. This is the first time Samsung will use domestically produced mask blanks in its EUV process.