SICC Co. (Shandong Tianyue) — AI supply-chain exposure

SICC (Shandong Tianyue) makes silicon carbide substrates — the base wafers on which SiC power devices are built. Silicon carbide handles high voltages and heat far better than ordinary silicon, so it is used in efficient power-conversion parts, including the power-delivery systems that feed electricity to data-centre compute. In the chain SICC sits upstream as a materials supplier into the power-delivery path, a layer below the chipmakers who turn its substrates into finished devices.

Its structural hook is that power efficiency is becoming a first-order constraint on the build-out: as facilities pull ever more electricity, every point of conversion loss matters, and SiC helps cut it. Making good substrates is technically hard and capacity is concentrated among a small set of producers, which gives supply real leverage. The model places SICC at the edge because it is far from the accelerator, but it is exposed to the power problem that increasingly gates how much compute can actually be run.