Muaj ntau cov qauv kev lees paub rau kev txhaj tshuaj pwm, tab sis tsis muaj dab tsi ntau tshaj li cov ntsiab lus tseem ceeb hauv qab no:

1. Seb cov khoom txhaj tshuaj molded tau mus txog qhov yuav tsum tau ua

2. Yog nruam ntau lawm ruaj khov thiab txhim khu kev qha

3. Puas yog lub voj voog ntawm kev txhaj tshuaj molding tsim ib lub npias raws li tus nqi?

4. Seb tus qauv pwm thiab kev txav yog tsim tsim nyog / ntseeg tau

5. Txawm hais tias cov khoom pwm ua tau raws li cov khoom tsim

6. Cov tsos ntawm cov pwm yog huv si thiab huv si, thiab cov ntsiab lus tseem ceeb ntawm seb cov cim ntau yam ua tiav lossis tsis tuaj yeem piav qhia raws li qhov yuav tsum tau ua ntawm txhua lub tuam txhab thiab cov khoom yuav tsum tau ua.