Uphawu :
Sizama ukugqibelela kuzo zonke iinkcukacha.
Izinto zePlastiki zenza iiplagi zikhanyise kwaye zihlangane.
Iplagi enobungakanani obahlukeneyo bokhetho kulula kakhulu ukuyidibanisa kunye nokuqhawula.
Ukusebenza kakuhle kokutywinwa kuqinisekisa umgangatho ophezulu.
Umzekelo | ΦD | L | A |
SPP-4 | 4 | 30 | 20 |
SPP-6 | 6 | 34 | 20 |
SPP-8 | 8 | 38 | 22 |
SPP-10 | 10 | 40 | 25 |
I-SPP-12 | 12 | 43 | 27 |