SUMCO Corporation is a dedicated producer of silicon wafers, and was incorporated as a joint venture company by combination of the former silicon businesses of the Sumitomo Metals group and the Mitsubishi Materials group. SUMCO group comprises six subsidiaries in Japan and 14 overseas subsidiaries and one affiliate in Japan. We have our own manufacturing facilities based in and outside of Japan and maintain sales operations in Japan, the United States, Europe, and Asia.

Our management philosophy aims to achieve the market reputation of SUMCO as one of the world's leading manufacturers of silicon wafers, offering silicon wafer products which satisfy every and all expectations of customers, maximizing shareholder value, providing our employees with welfare for them and their families, and contributing to the society.

By concentrating resources in the 300mm wafer business, in anticipation of further market expansion, we aim to enhance profit growth and facilitate corporate value on the basis of secure, long-term relationships and trustworthiness with our customers.