Ubwino:
1. Mitundu yosiyanasiyana ya riveting;
2. Ndi yoyenera kwambiri kupangira zinthu zofewa komanso zofooka;
3. Chimake cha msomali chili ndi kapangidwe kotseka ka makina, komwe kangapereke kulumikizana kwamphamvu kwambiri kosagwedezeka;
4. Ndi magwiridwe antchito osindikiza.
Nthawi yotumizira: Januwale-12-2022
