1. Txhais qhov yuav tsum tau muaj: Qhia meej txog cov xwm txheej ntawm daim ntawv thov, qhov chaw txuas thiab cov qauv tsim ntawm daim ntawv lo. Qhov no yuav pab txo qis koj cov kev xaiv thiab nrhiav pom cov khoom zoo dua.
2. Kev kuaj cov khoom: Nws raug pom zoo kom ua cov khoom kuaj ua ntej txiav txim siab zaum kawg. Ntsuam xyuas cov khoom adhesion, durability thiab tsis kam ntawm cov khoom sib txawv kom ntseeg tau tias lawv ua tau raws li qhov yuav tsum tau ua.
3. Tham nrog tus kws tshaj lij: Yog tias koj tsis meej pem txog kev xaiv cov ntaub ntawv nplaum rau tus kheej, koj tuaj yeem sab laj Lebos. Peb muaj peev xwm muab cov lus qhia thiab kev daws teeb meem raws li cov kev xav tau tshwj xeeb thiab daim ntawv thov scenarios.
4. Tus nqi thiab huab hwm coj sib npaug: Ntxiv rau cov khoom siv, tus nqi kuj yog ib qho kev txiav txim siab rau kev xaiv. Ntsuas qhov zoo, durability, thiab tus nqi ntawm cov khoom siv los xaiv cov ntaub ntawv zoo rau koj cov peev nyiaj.