China Kudzera pakhoma Othandizira
Makina odutsawo amatha kukhazikitsidwa mbali ndi mapanelo omwe ali ndi mphamvu kuchokera ku 1mm mpaka 10mm, ndipo amatha kubweza ndalama ndikusintha kukula kwa gululi kuti apange chipilala chilichonse. Kuphatikiza apo, mitengo yolerera imatha kugwiritsidwa ntchito kuwonjezera mipata ya mpweya ndi mtunda wokwirira.