From circuit boards to EV batteries: why Nan Ya’s copper foil matters

Nan Ya’s electrodeposited copper foil quietly underpins everything from high-layer PCBs to EV battery cells. A closer look at thickness options, performance specs and where this specialty material fits in the Taiwanese group’s portfolio.

Edited by ad hoc news Flagship & Bestseller Desk. Reviewed before publication on 06/15/2026 at 2:35 PM ET. Details in the imprint.

Electronics makers from PCB fabricators to EV battery suppliers rely on one quiet workhorse: electrodeposited copper foil from Nan Ya Plastics, a core material for multilayer printed circuit boards and lithium-ion cells. The foil, produced in Taiwan and China, is specified in thicknesses from around 4 micrometers up to 35 micrometers to serve everything from fine-line HDI boards to power applications.

Where Nan Ya’s copper foil is used and why thickness matters

Nan Ya Plastics highlights electrodeposited copper foil as a strategic product line for high-layer-count and HDI printed circuit boards, emphasizing controlled surface roughness and uniform grain structure to support fine-line etching and reliable adhesion of dielectric layers. The company’s official product page lists copper foil offerings aimed at PCB, CCL and lithium battery manufacturers.

In PCB production, typical Nan Ya electrodeposited foils span nominal thicknesses such as 9 ?m, 12 ?m, 18 ?m and 35 ?m, giving board designers flexibility to balance current-carrying capacity, layer count and signal integrity in multilayer stacks. Industry market reports that profile major suppliers describe Nan Ya as one of the leading global vendors of electrodeposited copper foil for printed circuit boards, serving both conventional FR-4 laminates and more advanced high-frequency substrates. A recent copper foil market analysis names Nan Ya among key players in the segment.

Beyond traditional PCBs, Nan Ya also produces ultra-thin copper foil for lithium-ion battery anodes, where thickness can fall below 8 ?m to reduce inactive weight in EV and energy storage cells. The company has reported increased investment in battery-grade foil capacity in response to growing electric vehicle demand, positioning this material as a bridge between its long-standing PCB copper foil business and newer energy applications. This extension into battery foil complements Nan Ya’s existing role as a major supplier of copper-clad laminates and resins to the electronics industry, creating cross-selling opportunities with established automotive and industrial customers.

Within parent company Formosa Plastics Group, Nan Ya Plastics frames copper foil as a core electronics material alongside epoxy resins, glass fabrics and laminate products, contributing to the group’s broader electronic materials revenue. According to the latest annual report, electronic materials including copper foil represent a significant share of Nan Ya’s consolidated sales, though the company does not disclose copper foil revenue as a standalone line item. Nan Ya’s 2024 annual report points to continued capital expenditures in high-value electronic materials, explicitly mentioning capacity additions in copper foil for both PCB and lithium battery applications.

Shares of Nan Ya Plastics (TW0001303006) closed on the Taiwan Stock Exchange at TWD 70.80 on 06/13/2026, according to recent Taipei market data. Official TWSE quotations show the stock trading in moderate volumes alongside other Formosa group companies.

Nan Ya electrodeposited copper foil at a glance

• Product: Electrodeposited copper foil for PCB and lithium-ion battery applications
• Manufacturer: Nan Ya Plastics Corporation
• Category: Flagship/Bestseller electronic material
• Launch date: In continuous production for multiple years; expanded capacities highlighted in recent annual reports
• MSRP / Price: Contract-based pricing, typically quoted per kilogram or per square meter to industrial customers
• Availability: Supplied directly to PCB fabricators, laminate manufacturers and battery producers, primarily in Asia with global export
• Target audience: Industrial clients in printed circuit board manufacturing, copper-clad laminate production and lithium-ion cell assembly
• Key differentiator / USP: Wide range of electrodeposited foil thicknesses and grades tailored for HDI PCBs and EV battery anodes, backed by integrated upstream electronic materials within Formosa Plastics Group

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.