Ntawv khob tshuab tej teeb meem

1. Daim ntawv jam: xyuas seb daim ntawv pub mis zoo li cas, thiab kho cov ntawv nruj thiab ceev ceev.

2. Moulding tsis zoo: xyuas seb cov pwm puas hnav, seb lub siab molding puas tsim nyog, thiab kho qhov cuam tshuam.

3. Kev txiav tsis sib xws: xyuas seb lub cuab yeej txiav puas yog ntse thiab seb lub sijhawm txiav puas yog, thiab hloov lossis kho yog tias tsim nyog.

4. Tswj lub cev tsis ua haujlwm: Raws li qhov yuam kev tam sim no, xa mus rau phau ntawv qhia kev daws teeb meem thiab kho.