1. Haydaroojin, oo ku habboon laba-jibbaaran, dammaanad saddex-laab ah, hydrocarbon caraf udgoon, carbonyl, nitrile, dhimista nitro
Wax nuugaya haydarojiin heer sare ah
3. Resistors ee kala duwanaanta iska caabinta hooseeya ee warshadaha elektiroonigga ah
4. Qalabka ceeriin ee potentiometer iyo qaybaha kale iyo qalabka wareegga filimka dhumuc weyn ee warshadaha elektiroonigga ah