Muaj plaub qib ntawm ntab iav, nws yog qhov txawv ntawm npuas, impurities, khawb, thiab kab ntawm qhov tsos.
1. Daim iav iav.Tsis muaj khawb ntawm cov iav zoo li.Lub flatness zoo, nws yog cov iav zoo tshaj plaws, tuaj yeem siv los tsim daim iav.
2. Automotive iav.Cov tsos yog huv si, tsis muaj npuas thiab khawb rau qhov muag liab qab.Qhov zoo yog siab heev.Nws kuj yog siv rau hauv cov rooj tog zaum thiab khoom siv.
3. Kev tsim kho iav.Muaj ob peb npuas, khawb thiab pob zeb hauv iav.Feem ntau siv nyob rau hauv kab hlau rhuav phab ntsa, qhov kev xav tau zoo tsis yog siab.
4. Cov iav tsis tsim nyog.Qhov zoo yog qhov tsis zoo, ua tsis tau raws li tus qauv iav.
Lub sij hawm xa tuaj: Mar-30-2021