Shin-Etsu Chemical, the company that already operates Japan’s only large-scale rare-earth separation and refining facility, is moving to build a rare-earth smelter on home soil. The goal is straightforward: cut the country’s deep dependence on Chinese processing of the minerals that power everything from electric vehicles to wind turbines to missile guidance systems.
Why Shin-Etsu and why now
Shin-Etsu Chemical (TSE: 4063) is a global leader in the production of high-performance neodymium-iron-boron and samarium-cobalt magnets. These are the permanent magnets inside EV motors, wind turbine generators, and industrial equipment.
The company isn’t starting from scratch. It already runs Japan’s only large-scale rare-earth separation and refining operation. It also established a magnet-alloy plant in Fujian, China back in 2012, with production capacity of 3,000 tons annually. And it has invested in Vietnam, building out full magnet production and refining capabilities of roughly 2,000 metric tons per year.
In October 2025, Japan and the US formed a critical minerals alliance focused on technology sharing and diversified supply chains.
