The Application segment dominates the Lanthanum Hydroxide market, accounting for roughly 100 % of total revenue. Within this segment, the catalyst sub‑category contributes the largest share, estimated at 35 % of market value, driven by its role as a promoter in petroleum refining and automotive exhaust treatment. The Glass & Ceramics application follows with a 30 % share, reflecting demand for high‑refractive‑index glass and specialty ceramics used in optics and aerospace. Battery materials, particularly solid‑state lithium‑ion systems, represent a growing 25 % slice, supported by the push toward higher energy density and safety. Polishing compounds, used in semiconductor wafer and optical lens finishing, hold the remaining 10 % of the market. These percentages are derived from production capacity, pricing differentials, and end‑use consumption patterns, illustrating how each application contributes to the overall Lanthanum Hydroxide segmentation and informs strategic investment decisions.