SUMCO / Minato / Tokyo / JP

SUMCO Head Office

Not a compute operatorOperationalDocumented building outlineVerified 2026-09-11

What is published

25 m

Who SUMCO buys from and sells to, each relationship carrying the source that states it.

None recorded.

UMC Fab 12iUMC
Buys Silicon wafers
Evidence from United Microelectronics Corporation
1. For example, we purchased a majority of our silicon wafers from Shin-Etsu Handotai Corporation, or Shin-Etsu, GlobalWafers, Sumco Group (including Sumco Corporation and Formosa Sumco Technology Corporation) and Soitec.
  UMC Form 20-F 2025 · United Microelectronics Corporation · read 2026-09-11
UMC Fab 12iUMC
Buys Silicon wafers, including via Formosa Sumco Technology
Evidence from United Microelectronics Corporation
1. For example, we purchased a majority of our silicon wafers from Shin-Etsu Handotai Corporation, or Shin-Etsu, GlobalWafers, Sumco Group (including Sumco Corporation and Formosa Sumco Technology Corporation) and Soitec.
  Form 20-F, 2025 annual report · United Microelectronics Corporation · read 2026-09-11

Every company SUMCO deals with, and its own other sites, are on the SUMCO page.

7 other sites on this map.

Every change is appended, so an earlier value stays readable beside the one that replaced it.

SUMCO

Corporate Data | SUMCO CORPORATION · read 2026-09-11
1-2-1 Shibaura, Minato-ku, Tokyo 105-8634, Japan