1. Yaing'ono ndi yaying'ono kukula ndi kusindikiza bwino
2. Chipolopolo chachitsulo chosapanga dzimbiri / chipolopolo chamkuwa / chipolopolo chamkuwa chokhala ndi thimble
3. Mtengo ndi njira zopezera ndalama
4. Malizitsani chitetezo champhamvu chamagetsi
5. Perekani OEM, kusintha mwamakonda
1. Zozizira zamalonda, Refrigeration
2. HVAC system, Automobile air conditioner