Imibhobho engenamthungo iyenziwa kwi-tube blanks yenkcazo eyahlukeneyo ngokusebenzisa i-extrusion ephezulu yokushisa, ukupholisa, ukukhupha, ukugqiba kunye nezinye iinkqubo. Yenye yeentlobo ezine eziphambili zentsimbi kwilizwe lam. Isetyenziswa ikakhulu ukuthutha ulwelo olunjengamanzi, i-oyile, i-g yendalo...
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