Ihoyilesi ephezulu ekumgangatho ophezulu yangaphandle yemifanekiso eqingqiweyo yokhozi oluthengiswayo
Siye sazibandakanya kwishishini lemifanekiso eqingqiweyo iminyaka engama-43, samkelekile ukuba senze ngokwezifiso imifanekiso eqingqiweyo yebhastile, imifanekiso eqingqiweyo yobhedu, imifanekiso eqingqiweyo yentsimbi engenasici kunye nefiberglass.