Yangtze Optical Fibre and Cable (YOFC) — AI supply-chain exposure

Yangtze Optical Fibre and Cable, based in Wuhan, is the world's largest maker of optical fiber preforms and fiber — the glass strands, and the preforms they are drawn from, that carry light through networks. It sits in the physical-infrastructure layer of the chain, supplying the raw connective medium rather than the transceivers or switches at either end.

The hook is a demand tailwind from AI itself. As GPU clusters grow, the east-west traffic between servers inside and between data centers climbs, and that pulls incremental fiber and cable volume. YOFC's advantage is scale and preform integration — making its own preforms, the hardest and most capital-intensive part of fiber production, rather than buying them. That gives it cost position in a commoditizing product, which is why the model frames it as a supplier to optical interconnect.