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1967
Copper foil manufacturing company established in Ageo City, Saitama Prefecture
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1968
Commercial production begins at Ageo Plant.
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1980
Established Taiwan Copper Foil Co.

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1991
Mitsui Copper Foil (Malaysia) is established in Selangor, Malaysia

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1998
Mitsui Copper Foil (Hong Kong) Ltd. established as a sales and delivery base.
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1999
Mitsui Copper Foil (Suzhou) Co., Ltd. established as a slit processing and delivery base.
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2003
Established Oak-Mitsui Technologies LLC, an R&D base in New York, U.S.A.
History
We have established a global supply system with development, production, and processing and logistics business bases all over the world, with a focus on Asia.
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