Lub tshuab khib nyiab khib nyiab feem ntau yog siv rau kev rov qab los ntawm cov duab los ntxhua khaub ncaws, pov tseg zaj duab xis, pov tseg ntawv, ua npuas yas, cov kaus poom dej haus thiab cov khoom lag luam pov tseg thiab lwm yam khoom ntim thiab cov khoom pov tseg. Lub baler txo qhov chaw pov tseg, txuag tau txog li 80% ntawm qhov chaw khaws cia, txo nqi kev thauj mus los, thiab muaj txiaj ntsig zoo rau kev tiv thaiv ib puag ncig thiab pov tseg rov ua dua tshiab.