Txhaj Molding
Cov khoom yas tuaj yeem ua tau nrog ntau yam khoom siv zoo kawg nkaus rau ntau qhov zoo, kam rau ua, thiab muaj peev xwm. Lo lus-rau-lo lus, phav phav ntawm cov yas tuaj yeem ua tau siv ib qho pwm, ua kom cov txheej txheem ntau lawm thiab ua kom cov nqi them nyiaj poob qis. Rau kev tsim khoom sai sai ntawm cov khoom yas zoo li tsis nyob deb - Peb muab cov kev pabcuam yas txhaj tshuaj molding zoo tag nrho hauv tsev. Yas txhaj tshuaj molding yog cov txheej txheem nyiam los tsim cov yas kev cai rau ze li ntawm txhua qhov kev lag luam.
