Kev nkag siab zoo ntawm cov txheej txheem tsim khoom tso cai rau kev txaus siab ntawm kev siv zog thiab cov peev txheej tau nqis peev los tsim cov khoom siv niaj hnub no. Hauv tsab xov xwm no, peb yuav tshawb xyuas cov txheej txheem tsim cov khob yas kom ntxaws.
Kev tshaj lij chaw tsim khoom ntawm cov tshuab thermoforming.
Lus
