Cov cuab yeej siv tshuaj loog tshuaj tua kab mob yog ib yam khoom tseem ceeb tsim los ua kom muaj kev nyab xeeb thiab huv si rau cov txheej txheem kho mob.Nws siv cov thev naus laus zis tu kom tshem tawm cov kab mob phem thiab cov kab mob uas tuaj yeem ua rau muaj kab mob.Cov khoom no yog tsim rau siv hauv tsev kho mob, chaw kho mob, thiab lwm qhov chaw kho mob uas siv cov tshuaj loog.Cov txheej txheem tshuaj tua kab mob sai, ua haujlwm tau zoo, thiab siv tau yooj yim, ua rau nws yog qhov zoo tshaj plaws rau cov neeg ua haujlwm kho mob tsis khoom.
