1, muaj kev cuam tshuam zoo zog, ruaj khov zoo, thiab tsis muaj tshuaj lom thiab tsis qab, ib puag ncig kev noj qab haus huv.
2, muaj cov khoom siv tshuaj lom neeg zoo thiab cov khoom siv hluav taws xob, hluav taws xob zoo, tsis deformed, tsis yooj yim rau khawb.
3, zoo toughness, tsis tshua muaj dej nqus tus nqi, zoo corrosion kuj, yooj yim kev twb kev txuas, ntev kev pab cuam lub neej.
4, nrog rau ntau yam xim, nplua nuj nyob rau hauv cov duab thiab xim, muaj ib tug zoo degree ntawm kev zoo nkauj thiab practicality.
Nws yog ib qho kev xaiv zoo tshaj plaws rau cov faucets sab nraum zoov.
