Don gano zub da jini don Filter HEPA, sananne ne don amfani da photometer aerosol don gwaji. Injiniyoyi sun gwada ZR-6012 Aerosol Photometer dare da rana. Yau, za a fito da mashaya...
Abin farin ciki ne a sami abokai suna zuwa daga nesa! -- Confucius