Rubidium and Cesium: Strategic Scarce Metals for AI and New Energy, Supply-Demand Cliff Opens Up 4x Growth Space?

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The global market for rubidium, cesium, and their compounds was approximately $346 million (about 2.5 billion RMB) in 2025, and is projected to reach $1.25 billion by 2032, with a CAGR of 20.4%, representing a market size of around 10 billion RMB.

Two oligopolies will collectively control 63.9% of global cesium salt production and 97.8% of rubidium salt production. On the demand side, the rising penetration of perovskite solar cells combined with the development of space photovoltaics could drive the global rubidium salt demand CAGR to 94% from 2026 to 2030; the atomic clock market is expected to see a CAGR of 29% from 2025 to 2030. From 2026 to 2028, the global rubidium and cesium salt supply-demand balance will rapidly deteriorate from a slight surplus of 16 tons to a deficit of 1,684 tons. The rubidium and cesium salt industry is at the starting point of a "super cycle."

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