72 CARITY PRECOND MOULD

Qhov no yog 72 kab noj zaub fromform pwm, uas feem ntau siv nyob rau hauv kev txhaj tshuaj moulding txheej txheej. Hom pwm twg tuaj yeem tsim 72 cov preforms nyob rau ib zaug, kev txhim kho tau zoo ntau dua. Muaj ntau cov qhov zoo nkauj thiab cov txheej txheem xov xwm txuas ntxiv ntawm cov pwm. Lub qhov yog siv rau preforming moulding, thiab cov raj xa khoom yog ib feem ntawm cov kab cua txias lossis cov kub khiav. Cov qub yuav pab tau cov yas txias thiab teem sai sai, thaum lub tom kawg yog siv los thauj cov tshuab hluav taws kub kub. Cov kab liab liab nyob hauv qab ntawm cov pwm ua si txhawb nqa cov khoom siv sab nraud thiab cov khoom siv ntau yam rau cov khoom lag luam kom ntseeg tau tias yog pwm.