Silicon United Manufacturing Corporation (SUMCO)
Silicon United Manufactur
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Silicon United Manufacturing Corporation (SUMCO)


Silicon United Manufacturing Corporation (SUMCO)

Silicon United Manufacturing Corporation (SUMCO)

Industry and Production


Silicon United Manufacturing Corporation and Sumitomo Mitsubishi Silicon Corporation is a Japanese semiconductor company, manufacturing silicon wafers for semiconductor manufacturers worldwide. The company was established in 1999 as a joint venture between Mitsubishi Materials Corporation and Sumitomo Metal Industries and as of 2013 is the second largest silicon wafer producer in the world, after Shin-Etsu Handotai, with a market share of 30%.

SUMCO is listed on the first section of the Tokyo Stock Exchange and is a constituent of the Nikkei 225 stock index.


The company manufactures the following products:

  • Single crystal silicon ingots
  • Polished wafers
  • Annealed wafers
  • Epitaxial wafers
  • Junction isolated wafers
  • Silicon-on-Insulator (SOI) wafers
  • Reclaimed polished wafers


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13 February 2021


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Alena Potapova

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