# Copper-clad laminate & PCB materials

Part ID: 4.06 · Layer 4 (Servers, racks & integration)

The laminate — resin, copper foil and glass-cloth reinforcement — that high-layer-count boards (4.05) are fabricated from.

This part sits one step upstream of the PCB fabricators (4.05): copper-clad laminate suppliers combine resin systems, copper foil (4.06a) and glass-cloth reinforcement (4.06b) into the sheet material that board makers etch and stack into finished PCBs. Low-loss, low-dielectric-constant resin systems matter specifically for high-speed digital signaling, which is why they show up by name against this part. AI boards' higher layer counts and higher signal speeds push demand toward these low-Dk, low-loss grades rather than commodity FR-4 laminate, and that mix shift matters more to this tier's economics than raw board volume does. For investors, the laminate tier is a materials-science-driven part of the chain: qualification of a new resin or glass-cloth grade for a given board design takes time, so incumbency and long design-in relationships carry real weight, and pricing tends to track the mix shift toward higher-spec grades rather than unit volume alone.

**AI delta:** Higher board layer counts and faster signaling push demand toward low-loss, low-dielectric-constant laminate grades instead of commodity material, shifting the mix even where total board area doesn't grow as fast.

## Companies

| Company | Role | Confidence | Ownership | Ticker | Note |
|---|---|---|---|---|---|
| Doosan | manufacturer | inferred | public | 000150.KS |  |
| Elite Material | manufacturer | inferred | public | 2383.TW |  |
| Iteq | manufacturer | inferred | public | 6213.TW |  |
| Nanya Plastics | manufacturer | inferred | public | 1303.TW |  |
| Panasonic | manufacturer | inferred | public | 6752.T | Megtron |
| Rogers | manufacturer | inferred | public | ROG |  |
| Shengyi | manufacturer | inferred | public | 600183.SS |  |
| Taiwan Union TUC | manufacturer | inferred | public | 6274.TWO |  |
| Isola | manufacturer | inferred | private |  |  |

Confidence tags: disclosed = company/filing statement; reported = trade press or partner list; inferred = taxonomy lead.