| • Complete machine spraying section | |
| Fluorine-containing primer spraying | overspray spray containing PTFE particles (particle size 1–5 μm), styrene concentration peak 150–300 mg/m³ |
| Stealth coating construction | xylene, amine solvent accounted for a high proportion |
| • Composite material workshop | |
| Prepreg curing | acetone/MEK solvent volatilization (concentration gradient 30–120 mg/m³), long discharge cycle (4–8 h/batch) |
| Autoclave exhaust | trace phenolics (<5 ppm) with epoxy resin decomposition products |
| • Engine service section | |
| Paint removal process | the concentration of dichloromethane can reach 800–1,200 mg/m³ (lasting 10–15 min) |
| Oil circuit cleaning | aviation kerosene vapor (lower explosive limit 0.6% VOL) and cleaning agent (trichloroethylene accounted for 40–60%) mixed discharge |
