Cov pwm zoo li cas?
Cov yas pwm tuaj pwm tuaj yeem ua cov khoom yas ua khoom yas.
Yas yuav muab faib ua ob pawg: thermosetting yas thiab thermoplastic.Thermosetting yas cua sov yog muaj peev xwm solidify, tab sis ib zaug solidified, txawm reheating yuav tsis softened; Thermoplastic plastics rhaub kom muag, txias, kom solidify, thiab no cov kev ua tau ob rov qab ua dua.
Cov yas molding muaj ntau yam, yog li cov pwm kuj tsis zoo tib yam, tab sis ntau hom kev mould yog los ntawm melting, saib ntawm lub hauv paus ntsiab lus, tua peb theem.