Lub pulley feem ntau yog ua los ntawm cam khwb cia hlau (feem ntau hu ua npua hlau), vim nws yooj yim rau cam khwb cia thiab txheej txheem, thiab tus nqi qis.
Feem ntau, cov qauv tsim nrog qhov loj me yog cam khwb cia, thiab cov ntaub ntawv feem ntau yog cam khwb cia hlau (kev ua tau zoo casting), thiab tsis tshua muaj cam khwb cia hlau (kev ua haujlwm tsis zoo ntawm cov hlau).
Feem ntau, qhov me me tuaj yeem tsim los ua forging thiab cov khoom siv yog hlau. Txoj siv rubley feem ntau yog siv rau lub sijhawm ntev - kis tau tus mob ntawm lub zog, xws li cov khoom siv hluav taws xob me me, cov tsheb ua liaj ua teb, tsheb laij teb, tsheb, mining machinery, machining equipment, textile machinery.
