Kukhala ndi magwiridwe antchito abwino kwambiri monga mphamvu yayikulu, kuvuta kwambiri, kulimba kwa mafakitale, magetsi, makina, mphamvu, ma squonductor a mankhwala. Mapulogalamu akuluakulu ali motere:
1. Chida chodula
2. Magawo a injini kutentha kwambiri
3. Zovala zadothi
4. Zogulitsa zowonjezera kutentha kwambiri
5. Mankhwala osokoneza bongo osagwirizana ndi kuvala
