1, pheej yig thiab ua haujlwm, ua haujlwm yooj yooj yim, tsawg tus nqi.
2, tsis hais caij, hnub thiab nag, tuaj yeem siv txhua hnub.
3, txo cov nqi kho mob, tshwj xeeb tshaj yog nyob rau hauv txoj kab nrog dej hauv cov dej.
4, anti-ultraviolet, corrosion-resistant, mildew, thiab ib puag ncig cov pa phem, tsis txhob ploj, cov av nyom rov tuaj yeem siv tau.
5, ua rau kom muaj kev txav mus los, txo cov suab nrov ntawm chaw ua si, thiab muaj lub luag haujlwm ntawm kev poob siab, kev quab yuam, hauv kev ua raws li kev qhia ntawm kev qhia tawm.
6, yuav nquag siv, kev ua tau zoo ib yam, zoo heev txhim kho cov kev siv ntawm qhov chaw.
7, ntev lub neej, nyob rau hauv ib txwm muaj peev xwm siv tau 6-8 xyoo.
