It can be used for nano-film spraying, solar cell spraying, fuel cell spraying, glass spraying, AR transmittance-enhancing and reflectance-reducing film spraying, hydrophilic coating spraying, hydrophobic coating spraying, heat-insulating film spraying, plasma-exchange membrane spraying, fuel cell membrane electrode spraying, transparent conductive film spraying, biosensor coating spraying, photoresist spraying, circuit board flux spraying, transparent conductive film spraying, super-hydrophobic coating spraying, antimicrobial coating spraying, and so on.