| Number | Pollution industries | Typical VOC hazardous substances examples |
| 1 | Refiney and petrochemical | Benzene, 1,3-butadiene, hexane |
| 2 | Storage and sales of oil products | Hexane, benzene, toluene, xylene |
| 3 | Paint production and use | Xylene, toluene, benzene, dichloro(chloro), methane, methyl isobutyl ketone, ethylene glycol |
| 4 | printing and ink manufacturing | Toluene, xylene, ethylene glycol |
| 5 | synthetic rubber | Toluene, xylene, benzopyrene |
| 6 | synthetic fiber | Formaldehyde, benzene |