Cov khoom lag luam ruaj khov
Non-standard imported precision bearings muaj cov ruaj khov hnav tsis kam, suab nrov thiab tsis tshua muaj kev sib txhuam, thiab txhim kho kev nyab xeeb
Tsim nrog kev coj tus kheej zoo tshaj cov hlau
Cov qauv tsim, ruaj thiab tsis yooj yim rau deform, zoo load kuj.
Kev ntsuas nruj heev
Tom qab kuaj ntau thiab ntsuas, kom paub tseeb cov khoom zoo