The Application segment of the Basalt Fiber Twisted Yarn market is divided into four primary end‑uses: Construction, Automotive, Aerospace, and Industrial. Construction accounts for roughly 45 % of total revenue, driven by the material’s fire‑resistance, high tensile strength, and low thermal conductivity, which support reinforcement of concrete, roofing membranes, and façade panels. Automotive contributes about 30 % as manufacturers replace steel and glass‑fiber reinforcements with basalt yarn to reduce vehicle weight while maintaining crash‑worthiness; the growth of electric‑driven models accelerates this shift. Aerospace holds an estimated 15 % share, reflecting niche adoption in composite panels, interior fabrics, and thermal‑shielding components where temperature stability is critical. Finally, Industrial applications—such as filtration, protective clothing, and wind‑turbine blades—represent the remaining 10 %. Collectively, these sub‑categories shape the overall market size, and the proportional weighting is captured in the accompanying pie chart, a core element of the Basalt Fiber Twisted Yarn segmentation analysis.