Cov kab yeeb nkab yas tsim muaj cov kev tswj hwm, extruder, tuag taub hau, tractary txiav ntaus thiab tig khib .
Lub PE yeeb nkab ntau lawm kab muaj cov kab ke ntawm cov kab yas yooj yim, cov yeeb nkab yooj yim thiab muaj zog nyob hauv ib puag ncig kev ntxhov siab.
