Producer
Grirem Advanced Materials
Chinese rare-earth functional-materials maker; YAG and rare-earth LED phosphors.
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Rare-earth phosphors
Rare-earth polishing powders
Magnetic & functional materials
Hydrogen-storage alloys
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Concentration2024
Rare earths are the textbook China chokepoint, and GRIREM is one of the downstream Chinese processors that turn them into finished functional materials. Its rare-earth phosphors light LEDs and displays, but its cerium-oxide polishing powders are equally consequential: they are the abrasive that polishes the glass of smartphone screens and precision optics, and that figures in the chemical-mechanical polishing of semiconductor wafers. So a single Chinese rare-earth materials maker sits under lighting, display glass, optics and chip-wafer finishing at once. And because China dominates not only rare-earth mining but the downstream separation and material-making that GRIREM does, these supply chains depend on Chinese processing capacity, not merely Chinese ore. The chokepoint isn't only the rocks in the ground; it's the refining and the finished-material know-how concentrated in firms like GRIREM — which is what makes rare-earth export controls so potent a lever.
GRIREM Advanced Materials ↗Did you know2024
Rare earths thread through far more than phosphors, and GRIREM embodies that breadth. Alongside lighting phosphors and polishing powders, it makes magnetic and functional materials and rare-earth hydrogen-storage alloys — the negative-electrode material of the nickel-metal-hydride batteries used in hybrid vehicles and many devices. So one company supplies the glow of an LED, the polish of a phone screen, the functional materials of motors and electronics, and the alloy in a hybrid car's battery, all from the same rare-earth base. Each is a quiet, China-concentrated dependency that surfaces only when supply is restricted — as periodic Chinese rare-earth export controls have repeatedly demonstrated. Rare earths' famously broad criticality is, in practice, a small number of downstream Chinese material makers like GRIREM standing between the raw elements and a dozen unrelated industries.
GRIREM Advanced Materials ↗