Non-Combustible Board segmentation by application reveals five primary end‑use clusters that collectively drive market volume. Construction accounts for roughly 40 % of total demand, reflecting the material’s fire‑resistance requirements in wall panels, ceilings, and fire doors across residential and commercial projects. The Transportation segment, representing 25 %, is anchored by railway carriage interiors, subway tunnel linings, and bus body components where stringent safety standards mandate non‑combustible substrates. Aerospace contributes 15 %, primarily through cabin interior panels and cargo hold linings that must meet rigorous flame‑retardancy certifications. Industrial Machinery holds 12 % of the market, supplying protective enclosures and control‑room walls in factories where fire‑hazard mitigation is critical. Finally, Electrical & Electronics occupies 8 %, providing circuit‑board backings and transformer housings that benefit from the board’s insulating and non‑combustible properties. Together, these applications define the overall Non‑Combustible Board market size, with construction alone generating the largest revenue share.