Nyob rau hauv xyoo tas los no, kev tsim khoom tsim tau thiab kev ua tau zoo tau zoo dua qub los ntawm kev siv cov tshuab thermoforming siab heev. Qhov kev siv thev naus laus zis no tau hloov pauv cov txheej txheem tsim khoom, tso cai rau cov tuam txhab tsim cov khoom lag luam zoo fa ...