About Us

What SUMCO?

Silicon United Manufacturing COrporation sumco is a group creating value with diverse technologies and culture. sumco is a company creatide by merging the silicon wafer operations of Sumitomo and Mitsubishi. sumco is a dedicated silicon wafer manufacturer with a global market share of approximately 30%,and an overseas sales ratio of about 80%.Silicon United Manufacturing COrporation sumco is a group creating value with diverse technologies and culture. sumco is a company creatide by merging the silicon wafer operations of Sumitomo and Mitsubishi. sumco is a dedicated silicon wafer manufacturer with a global market share of approximately 30%,and an overseas sales ratio of about 80%.

Major awards in 2019

Winning high customer acclaim

Excellent Supplier Award for the sixth straight year

TSMC2019 Excellent Performance Award

Excellent Supplier Award for the sixth straight year

TSMC2019 Excellent Performance Award

At the 19th Supply Chain Management Forum of TSMC, SUMCO was one of only 14 companies to receive the Excellent Performance Award, of the more than 700 major TSMC suppliers. This was the 8th time, and the 6th time in a row, to receive this award. Among silicon wafer suppliers, SUMCO was the only award recipient this time.

Awarded for the 19th straight year

Intel2019 Preferred Quality Supplier Award

Awarded for the 19th straight year

Intel2019 Preferred Quality Supplier Award

SUMCO was one of only 35 companies to be awarded out of more than 16,000 Intel suppliers.