1. Cov ntawv ua raws yuav tsum tau khaws cia kom qhuav thiab huv, txwv tsis pub nws yuav cuam tshuam rau kev ua haujlwm ntawm daim kab xev;
2. Thov siv qee yam quab yuam kom ua daim kab xev thiab cov ntawv ua kom tau zoo ua ke;
3. Tom qab nws txoj haujlwm siv tau ua tiav, daim kab xev yuav tsum tau tev tawm sai li sai tau kom tsis txhob muaj qhov tshwm sim ntawm cov kua nplaum seem;
4. Cov kab xev nplaum uas tsis muaj qhov ua haujlwm tiv thaiv UV yuav tsum zam lub hnub ci thiab qhov tshwm sim ntawm cov kua nplaum uas seem;
5. Ib puag ncig sib txawv thiab cov khoom nplaum sib txawv, tib daim kab xev yuav qhia cov txiaj ntsig sib txawv; xws li iav. Cov hlau, yas, thiab lwm yam, yuav tsum tau sim ua ntej yuav siv ntau.
