Ukuze kutholwe ukuvuza kwesihlungi se-HEPA, kwaziwa kahle ukusebenzisa i-aerosol photometer ukuhlola. Namuhla, Sizothatha i-ZR-6012 Aerosol Photometer njengesibonelo ukwethula isimiso sokuthola...
Ngo-Agasti 7. umgubho weminyaka engu-16 we-JUNRAY CO. ubusedolobheni lase-Qingdao. Eminyakeni eyishumi edlule, uMongameli He Chunlei wasungula inkampani iJunray eChina.