Peb siv kev ncaj ncees thiab yeej-yeej ua lub hauv paus ntsiab lus ua haujlwm, thiab kho txhua lub lag luam nrog kev tswj hwm thiab kev saib xyuas nruj.
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Tswj Cov Pa phem Ib puag ncig nrog Columnar activated carbon
Kev ua qias huab cua thiab dej tseem yog ib qho teeb meem thoob ntiaj teb uas tseem ceeb tshaj plaws, ua rau cov ecosystem tseem ceeb, cov saw hlau noj mov, thiab ib puag ncig uas tsim nyog rau tib neeg lub neej muaj kev phom sij. Kev ua qias dej feem ntau yog los ntawm cov hlau hnyav, cov kuab paug organic uas tsis ruaj khov, thiab cov kab mob - lom, ...Nyeem ntxiv