Application‑based segmentation reveals where demand for Hydrogen Fluoride Gas Detectors is most pronounced. The petrochemical sector, responsible for large‑scale HF usage in alkylation and fluorination processes, captures the largest slice of the market, roughly 40 % of total sales, reflecting stringent safety regulations and high‑volume operations. Semiconductor manufacturing, which employs HF for wafer cleaning and etching, follows with an estimated 30 % share, driven by the need for ultra‑precise detection in clean‑room environments. Power generation facilities, particularly those utilizing HF in gas‑turbine cooling and sulfuric acid production, contribute about 20 % of the market, as continuous monitoring mitigates corrosion risks. Waste‑treatment and water‑purification plants, where HF may appear as a by‑product, represent the remaining 10 % of revenue, highlighting emerging opportunities as environmental compliance intensifies. This application breakdown aligns with the Hydrogen Fluoride Gas Detector market taxonomy and underpins strategic investment decisions.