(1) Cov txheej txheem tsim tshwj xeeb yuav tsum muaj peev xwm los xyuas kom meej qhov ua tau zoo ntawm lub tshuab qhov chaw (lossis kev sib dhos zoo ntawm lub tshuab) thiab ua tau raws li cov kev cai uas tau teev tseg hauv cov qauv tsim.
(2) Cov txheej txheem thev naus laus zis yuav tsum muaj cov khoom lag luam siab, kom cov khoom tuaj yeem muab tso rau hauv kev lag luam sai li sai tau.
(3) Sim txo cov nqi tsim khoom
(4) Ua tib zoo txo qis kev siv zog ntawm cov neeg ua haujlwm thiab ua kom muaj kev nyab xeeb ntawm kev tsim khoom.
