New copper foil demand keeps Mitsui Kinzoku’s VSP lineup in the spotlight

High-end copper foil for EV batteries and 5G electronics remains a strategic pillar for Mitsui Mining & Smelting. Its VSP copper foil range targets next-generation lithium-ion cells and advanced PCBs, as analysts cite strong performance in this segment.

Edited by ad hoc news New Releases & Launches Desk. Reviewed before publication on 06/16/2026 at 10:40 AM ET. Details in the imprint.

Mitsui Mining & Smelting, better known in Japan as Mitsui Kinzoku, continues to ride strong demand for high-performance copper foil used in electric vehicle batteries and high-frequency electronics, with its VSP copper foil range positioned as a core material for next-generation lithium-ion cells. The VSP portfolio comprises electrodeposited copper foils engineered for both rechargeable battery collectors and high-end printed circuit boards, putting the material business firmly at the center of Mitsui Kinzoku’s growth story.

Where VSP copper foil fits in the EV and electronics supply chain

VSP is Mitsui Kinzoku’s family of electrodeposited copper foils designed for demanding applications such as lithium-ion battery current collectors for EVs and hybrid vehicles, as well as high-density printed wiring boards used in communication and computing hardware. According to the company’s official product information, the VSP copper foil series is manufactured in Japan and offered in multiple thicknesses and surface treatments to balance conductivity, adhesion to active materials and mechanical strength for bending and winding in cylindrical or prismatic cells. Mitsui Kinzoku’s product page describes VSP foils as high-performance materials for lithium-ion batteries and printed wiring boards.

For lithium-ion batteries, Mitsui Kinzoku highlights that its VSP foils are engineered to act as current collectors on the anode side, supporting graphite or silicon-based active materials in automotive and energy-storage cells. In technical literature, the company points to high tensile strength and controlled surface roughness to improve coating uniformity and cycle life, key parameters for EV battery makers working toward longer range and faster charging. On the PCB side, the VSP family is part of Mitsui Kinzoku’s broader copper foil and circuit materials portfolio, where low-profile foil variants help reduce signal loss at high frequencies required in 5G base stations, smartphones and networking gear.

Production of VSP copper foil is integrated into Mitsui Kinzoku’s non-ferrous metals and functional materials operations, allowing the group to leverage its experience in copper smelting, rolling and surface treatment. The company’s segment disclosures emphasize that battery and electronic materials are strategic growth areas, complementing more traditional businesses such as zinc and copper smelting and automotive components. In recent presentations, Mitsui Kinzoku has cited rising demand for copper foil for lithium-ion batteries as a driver of earnings volatility but also a source of medium-term growth potential as EV penetration increases worldwide. Investor materials outline copper foil for batteries as a key focus within the company’s functional materials strategy.

While the VSP line itself is a B2B product not marketed directly to consumers, its end uses are visible in mainstream technologies: the same type of high-strength, fine-roughness copper foil used in EV battery cells is also deployed in consumer electronics for thin, high-layer-count printed wiring boards. This dual exposure gives Mitsui Kinzoku leverage to both automotive and electronics cycles, even though the company’s branding rarely appears on finished goods. Industry observers note that competition in copper foil is intensifying, with Korean, Chinese and Taiwanese suppliers expanding capacity, but Japanese producers such as Mitsui Kinzoku retain an edge in specialized, high-reliability grades demanded by top-tier battery and electronics manufacturers.

Against this backdrop, Mitsui Kinzoku’s share price has shown sensitivity to developments in its copper foil business. Japanese market reports in mid-2026 highlighted that the stock advanced after domestic brokers raised their target prices, explicitly citing strong performance and expectations for sustained demand in copper foil for batteries. One trading update noted that Mitsui Mining & Smelting shares ranked among the top gainers on the Nikkei 225 on the day, reflecting investor optimism about the company’s position in the EV materials supply chain. Market data from Trading Economics pointed to Mitsui Mining & Smelting as one of the session’s notable movers on the Nikkei 225.

Within Mitsui Kinzoku’s portfolio, VSP copper foil sits alongside other functional materials and catalytic products that help diversify earnings away from pure metals smelting. Shares of Mitsui Mining & Smelting (ISIN JP3362700001) closed on the Tokyo Stock Exchange in recent trading with investors watching the growth trajectory of its copper foil and battery materials business as a gauge of longer-term value.

Mitsui Kinzoku VSP copper foil in brief

• Product: VSP copper foil
• Manufacturer: Mitsui Mining & Smelting Co., Ltd.
• Category: New Release/Launch - functional copper foil for batteries and PCBs
• Launch date: Not publicly specified; part of the current copper foil lineup
• MSRP / Price: Not disclosed; B2B pricing based on industrial contracts
• Availability: Supplied directly to battery and electronics manufacturers, primarily from Japan
• Target audience: EV battery makers, energy storage suppliers and high-end PCB manufacturers
• Key differentiator / USP: Electrodeposited copper foil with tuned mechanical strength and surface characteristics for demanding lithium-ion and high-frequency PCB applications

This article was a.i.-assisted and editorially reviewed. Product information without warranty; prices and availability may change at short notice. Not investment advice and not a buy or sell recommendation. Trading involves risk up to and including the total loss of invested capital.