(1) Zoo Extrusion: Cov kev taw qhia ntawm cov hlau khiav thaum lub caij tawm mus sab nraud yog tib yam li qhov kev taw qhia ntawm cov lus tsa suab ntawm cov punch.
(2) Rov qab-cia li: Cov kev taw qhia ntawm cov hlau khiav thaum lub caij tawm mus sab nraud yog rov qab rau cov lus taw kev ntawm cov punch.
(3) Co-extrusion: khiav ntawm ib feem ntawm cov hlau ntawm qhov seem yog tib yam li cov kev taw qhia ntawm lub zog ntawm cov punch, thiab cov kev taw qhia khiav ntawm lwm feem ntawm cov hlau yog rov qab rau cov kev taw qhia ntawm txav ntawm cov punch.
(4) Radial extrusion: Qhov kev taw qhia ntawm cov hlau khiav thaum lub sij hawm extrusion yog mus rau kev taw qhia ntawm cov lus taw qhia ntawm cov punch.