About Us

What SUMCO?

SUMCO specializes in making silicon wafers, the substrates on which semiconductors are fabricated.SUMCO specializes in making silicon wafers, the substrates on which semiconductors are fabricated.

Major awards in 2023

Winning high customer acclaim

Awarded for the 10th straight year and 15th time overall

TSMC2023 Excellent Performance Award

Awarded for the 10th straight year and 15th time overall

TSMC2023 Excellent Performance Award

SUMCO was one of 20 companies to be awarded the 2023 TSMC Excellent Performance Award.

Awarded for the 17th time

Samsung2023 Best in Value Award

Awarded for the 17th time

Samsung2023 Best in Value Award

SUMCO was one of nine Japanese companies to be awarded in the emiconductor division on Samsung Appreciation Day for stable wafer supply.