Peb tau xa cov pa roj carbon activated tag kis no. Cov khoom tau raug xa mus rau tus neeg nqa khoom thauj khoom raws li tau teem tseg, thiab peb yuav ua raws li kev thauj mus los raws sijhawm. Peb yuav muab cov ntaub ntawv xa mus rau koj thiab cov ntaub ntawv taug qab thaum lawv muaj.