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Lub tshuab ziab khaub ncaws thiab plua plav tshem tawm cov cuab yeej siv rau Sri Lanka
Thaum Lub Xya Hli 26, 2022, ziab thiab plua plav tshem tawm cov txheej txheem rau cov khoom siv chiv ua cov txheej txheem kho los ntawm Sri Lankan cov neeg siv khoom tiav thiab xa tuaj. Cov cuab yeej tseem ceeb ntawm cov khoom siv no feem ntau yog lub tshuab ziab khaub ncaws thiab cov khoom siv hluav taws xob tshem tawm cov plua plav. Qhov system no yog siv los nthuav th...Nyeem ntxiv
Xov xwm
Tag nrho granulation muaj nuj nqi thiab siab ntau lawm efficiency
Yog tias koj txaus siab rau peb cov khoom lossis xav paub ntxiv, thov nyem lub pob kev sab laj ntawm sab xis
