Electronics (30%) – The electronics sub‑segment, driven by high‑performance thermal interface materials and semiconductor packaging, accounts for roughly one‑third of the Boron Nitride Filler market. Its growth is anchored in rising demand for heat‑dissipating polymer composites in data‑center servers and power‑electronics modules. Automotive (25%) – In automotive applications, BN fillers improve thermal conductivity and wear resistance of polymeric brake pads, under‑hood components, and battery housings, contributing a quarter of market revenue. Aerospace (15%) – Aerospace uses BN‑filled composites for lightweight, thermally stable components in avionics and interior panels, representing a modest yet high‑value share. Industrial (20%) – Industrial uses span high‑temperature lubricants, wear‑resistant coatings, and molded parts for machinery, collectively generating one‑fifth of total sales. Cosmetics (10%) – The cosmetics sector incorporates nano‑BN for its opacity and thermal stability in powders and sunscreens, completing the remaining market slice. Together, these application categories define the current Boron Nitride Filler segmentation and illustrate how each contributes proportionally to overall market size.