Tsis muaj daim iav tooj dag yog qhov zoo dua thiab ua tau ntev dua daim iav zoo tib yam. Tsis muaj iav tsom iav tiv thaiv ib puag ncig, siv sijhawm ntev. Cov iav zoo ib yam yooj yim puas. Qhov nruab nrab zoo thiab tsis zoo ib puag ncig.
1, daim iav zoo tib yam hauv cov txheej txheem tsim khoom, tom qab qhov xav tau ntawm cov nyiaj plating, yuav tau txheej nrog txheej tooj liab los tiv thaiv, lub hom phiaj ntawm kev ua li ntawd yog kom zam daim iav puas.
2, thiab tsis muaj daim iav tooj liab yog txhawm rau hloov cov tooj liab tiv thaiv zaj duab xis nrog passivator tiv thaiv zaj duab xis, ob qho tib si tiv thaiv ib puag ncig thiab ua haujlwm ntev dua. Tsis muaj daim iav tooj liab kuj tseem hu ua daim iav tiv thaiv ib puag ncig.'
3, daim iav tsis muaj cov ntsiab lus tooj liab, nrog daim iav zoo tib yam uas muaj cov tooj tooj liab tsis zoo ib yam, daim iav tau teeb tsa saum npoo ntawm tus neeg sawv cev ntom ntom ntom ntom kom tiv thaiv zaj duab xis, tuaj yeem tiv thaiv daim iav yog khawb.
4, tsis muaj daim iav tooj liab hnav tsis kam, ua kom muaj zog, tiv taus xeb thiab lwm yam khoom muaj txiaj ntsig zoo dua li daim iav nyiaj zoo ib yam, thiab muaj kev cuam tshuam siab. Cov iav tsis muaj tooj liab nyob ntev dua li cov nyiaj ib txwm muaj.