Oomatshini be-LB babonelela ngePVC enkulu yomgca wokuvelisa umbhobho wedayamitha ukusuka kwi-315 ukuya kwi-1000mm. Ngeminyaka yokuphonononga kunye nophando lomgca wombhobho we-extrusion, sinamava kumgca wokuvelisa umbhobho omkhulu wePVC. Umgca unesakhiwo esikhethekileyo, uyilo lwenoveli, uyilo olufanelekileyo, kunye nokusebenza okuthembekileyo kokulawula.