Kuti muzindikire kutuluka kwa HEPA Fyuluta, imadziwika bwino kugwiritsa ntchito aerosol photometer poyesa. Lero, Titenga ZR-6012 Aerosol Photometer monga chitsanzo kuti tidziwitse mfundo yodziwira ...
Seputembala uno, Junray ndi mabizinesi aku South Korea asayina mgwirizano wamgwirizano. Pansi pa mgwirizanowu, mbali ziwirizi zipanga mgwirizano wofufuza mozama mu ...