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Mitsui Kinzoku raises ultrathin copper foil capacity target for third time as optical demand surges
What happened
Japan's Mitsui Kinzoku has announced its third capacity expansion plan since the start of fiscal 2026, covering MicroThin, its ultrathin copper foil used in optical communications equipment. The company is accelerating production expansion to meet sustained growth in market demand.
Impact and signal
Medium impactImpact score: 60/100
Affected components and suppliers
MicroThin ultrathin copper foil
Mitsui Kinzoku
capacity expansionultrathin copper foiloptical communicationsMitsui Kinzokufiscal 2026
Source and time
Source: DigiTimes Asia · 11/3/2026 · View original source
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