Langbo Machinery e fana ka li-extruder tsa polasetiki tsa boleng bo holimo bakeng sa tharollo ea Single Screw le Twin Screw, e tsepamisitse maikutlo holim'a boleng bo holimo le bokhabane ba polasetiki.Re etsa moralo oa screw ea extruder hore o lumellane le motsoako oa thepa e tala ho netefatsa motsoako o tšoanang le plastification e betere.