Qhov qog ntawm cov ntawv sau tuaj yeem ua tau yog tias tsis siv cov hlau zeb thiab feem ntau pob zeb, thiab saib cov ntawv sau ua pob zeb yuav zoo heev.
Peb xav tau:
- Styrofoam;
- Ntawv tsiaj ntawv luam tawm ntawm ib daim ntawv;
- PvA lo;
- Pleev xim-Aerosol ntawm acetone;
- Cov ntawv xov xwm rau kev siv zoo ntawm cov nplooj xim aerosol.
Kev tsim kho lub tswv yim rau cov granite
Txiav cov ntawv luam tawm ntawv.
Peb lo kua nplaum rau cov ntawv sau rau cov npaus ntawm cov npaus ntawm cov qauv uas xav tau.
Peb muaj kev ua npuas ncauj rau cov ntawv xov xwm thiab npog qhov chaw ua haujlwm nrog ib txheej ntawm cov xim pleev xim los ntawm cov tuaj yeem, ua ib feem ntawm cov acetone yuav tsum tau ua.
Cia peb qhuav cov xim. Koj tuaj yeem ntxiv cov xim ua cov chaw sib cais, txhim kho cov nyhuv ntawm cov qauv ntawm cov kev xav tau. Tshem cov tsiaj ntawv nrog cov nplaum cov kua nplaum.
Koj tuaj yeem rho tawm lossis tshem tawm tsab ntawv los xaiv cov ntaub ntawv ntawm cov tsiaj ntawv tom qab tshem cov ntawv xim pleev xim rau cov hlau, lossis tso cov ntawv sau tsis hloov.
Ib qho chaw