Bareegyada synthetic ee biriiga ah ayaa la isticmaalaa, kuwaas oo aan dhaawici doonin taayirrada oo socon doona muddo dheer
bir gacanta aluminium aluminium ah oo leh dabool caag ka-hortagga, dareen raaxo leh
Qalabka ugu muhiimsan ee giraangiraha giraangiraha ayaa ka samaysan caag dabiici ah, oo leh dabacsanaan iyo xasilloonaan.