Sumco 

Sumco Corporation, along with its affiliated entities, serves as a global manufacturer and vendor of silicon wafers essential for the semiconductor sector. Its operations span key regions including Japan, the United States, China, Taiwan, Korea, and various other international territories. The company's diverse product range features monocrystalline ingots, alongside a variety of specialized wafers such as polished, annealed, epitaxial, junction-isolated, silicon-on-insulator, and reclaimed polished types. Founded in 1999, the enterprise officially changed its name to Sumco Corporation in August 2005, having previously operated as Sumitomo Mitsubishi Silicon Corp. Its corporate headquarters are situated in Tokyo, Japan.