1. Raws li cov hauv paus ntsiab cai kho mob: Tus qauv tsim, tsim khoom, thiab siv cov ntsiab cai phais mob kev nyab xeeb thiab kev noj qab haus huv.
2. Cov ntaub ntawv zoo heev: kev phais cov cuab yeej xav tau xws li lub zog, thiab cov khoom ua tsis tau zoo, thiab cov khoom sib dhos yuav tsum yog cov nqaij tawg kom tsis txhob muaj cov nqaij mos.
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4. Diversified cov haujlwm: Muaj ntau hom kev phais mob uas tuaj yeem xaiv thiab sib xyaw ua ke raws li kev phais phais thiab cov kabmob kom tau raws li kev phais mob.
5. Yooj yim los ntxuav thiab tshuaj tua kab: Kev phais cov khoom siv feem ntau yuav tsum muaj kev tua rog siab, yog li cov qauv tshuaj tua kab mob yuav tsum tau xav txog kev kho kom tu thiab tshuaj tua kab mob.
6. Ergonomic Tsim: Tus qauv ntawm kev phais cov cuab yeej tseem ceeb yuav tsum tseem muaj kev nplij siab thiab qaug zog ntawm tus kws kho mob lub lag luam kom txo qis kev pheej hmoo ntawm kev phais mob.