Cov haujlwm ntawm cov hlau hnub ci lub ru tsev tsuas yog suav nrog cov hauv qab no:
Lub zog hluav taws xob muaj nuj nqi: Cov tsev vov vov vov hluav taws xob cov khoom siv hluav taws xob tsim hluav taws xob siv hluav taws xob ntau rau cov tuam txhab ua kom muaj zog
Rwb thaiv tsev ua haujlwm: Cov ntaub ntawv hlau xws li txhuas cov vuas muaj cov txheej txheem kub thiab yooj yim, suav nrog cov txheej txheem cua sov
Aesthetics thiab durability: hlau hnub ci ru tsev tsis tsuas muaj kev ua haujlwm zoo nkauj, tab sis kuj tuaj yeem ua kom muaj kev pab tsev vov tsev, thiab kuj tuaj yeem txuas ntxiv cov nqi tsev pheeb suab zeb xws li ntxiv rau cov ntaub ntawv vov tsev. Cov durability zoo thiab corrosion tsis kam, thiab tuaj yeem tswj tau ruaj khov ua tau zoo hauv kev siv ntev {}}
Kev tiv thaiv ib puag ncig thiab kev txhim kho kom ruaj khov: Hlau Voj Voj Vaj Tse, Kev Siv Kom Ua Kom Tau Zoo Rau Lub Zog Nruab Nrab
