Umfanekiso oqingqiweyo wobhedu wemivundla othengisiweyo uyathengiswa
Siye sazibandakanya kwishishini lemifanekiso eqingqiweyo iminyaka engama-43, samkelekile ukuba senze ngokwezifiso imifanekiso eqingqiweyo yebhastile, imifanekiso eqingqiweyo yobhedu, imifanekiso eqingqiweyo yentsimbi engenasici kunye nefiberglass.