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COMPANY RESEARCH / 6274.TWO

Taiwan Union Technology

Low-loss laminates for servers, storage and switches

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Where it fits in an AI server rack

Markets ThunderClad and TU-series high-speed laminates for servers, storage and enterprise routers and switches, with ThunderClad 5N, 5R, 5Q, 4HR and 4HN grades mapped to 100/800 Gbps links. Extreme- and super-low-loss grades were 39.3% of copper-clad laminate revenue in 2Q26, up from 36.1% for 2025 (earnings conference, July 29, 2026).

What the evidence establishes

Upstream enabler

Disclosed: TUC’s product pages list its high-speed laminates for servers and switches, and its 2Q26 earnings deck gives the low-loss revenue mix.

Materials, substrates, equipment or foundry capacity behind rack components. This is not a component supplier role or an established AI-rack revenue stream.

Component roleLow-loss laminates for servers, storage and switches
EvidenceDisclosed: TUC’s product pages list its high-speed laminates for servers and switches, and its 2Q26 earnings deck gives the low-loss revenue mix.
How we knowDisclosed The company’s own filing, release, annual report, product page or investor record describes the AI-server or AI-rack role. Where customers are unnamed, the listing says so.
Primary sourceTaiwan Union Technology — supporting disclosure
Company or official disclosure; vendor claims are attributed to their source.
Checked. This is the research review date, not the source publication or quote time.

Keep in perspective

TUC names no AI-server customer or platform; the low-loss mix shows product grade, not AI-rack use, which is an inference.

Diversified business exposure. This describes the breadth or role of the business; it is not an investment rating. An AI-server product, design-in or partnership does not by itself establish material AI-rack revenue, market share, or future returns.

Connections to the assembly

These links explain the technology relationship. The model is illustrative and does not represent an actual manufacturer’s bill of materials.

Tray motherboard

A high-layer-count printed circuit board built on low-loss laminate. It routes high-speed links and heavy power currents between the chips, connectors and power stages.

Scope of the company links: Board fabricators first, then laminate makers (upstream). Victory Giant, WUS and Shengyi Electronics disclose AI-server board revenue or share; Gold Circuit and TTM disclose AI-server or AI-driven data-center boards without naming customers. Elite Material, Shengyi Technology, Taiwan Union and Panasonic (MEGTRON) make the low-loss copper-clad laminate the boards are built on; they are upstream enablers, not board suppliers. No source names the fabricator or laminate of a specific NVL72 tray, and reports that Victory Giant supplies NVIDIA are press claims. Doosan and Kingboard Laminates were not verified.

Related research

Companies with overlapping sector exposure. Their products and evidence may differ; this is not a list of equivalent investments.

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