Eoptolink Technology Inc., Ltd. — AI supply-chain exposure

Eoptolink is a leading Chinese maker of high-speed optical transceivers, the pluggable modules that convert electrical signals into light so data can move between switches and servers across an AI cluster. Listed on Shenzhen's ChiNext board, it has ridden the shift to 800G optics, which now dominate its shipments, and it sells almost entirely into overseas AI data-centre customers. Alongside its domestic peer InnoLight, it supplies a large share of the incremental 800G modules feeding NVIDIA's build-out, and it has already brought its next-generation 1.6T transceivers to market.

Optics are the scale-out fabric of AI, the interconnect that lashes racks of accelerators into one machine, and each accelerator generation pulls module count and speed up with it, so demand tracks the compute build-out almost directly. That is why the model places Eoptolink at the centre of the chain: it is a producer rather than a reseller, capable at the top speed grade, and part of a very short list of suppliers qualified to ship there in volume. Its exposure is also its risk, with revenue concentrated in a handful of hyperscale customers and tied to how fast the next optical generation ramps.