Daim nplaum lo ntaub nplaum
Siv: Siv dav hauv kev lag luam, khoom noj khoom haus, dej haus, ntim khoom ntim hauv khw.
Nta: Nws muaj super lub teeb meem, txias ua hauj thiab kev laus ua haujlwm, daim ntawv thov, zoo heev viscosity, tsis yooj yim rau poob tawm, tsis deterioration, thiab muaj zog repairing zog.
Muaj ntau hom kab xees, cov no tsuas yog qee tus xwb, yog li nws tseem ceeb heev uas yuav tsum paub siv daim kab xev hauv kev nthuav dav los tiv thaiv koj txoj kev nyab xeeb. Nws yooj yim dua los siv daim kab xev.
