i-coke ye-petroleum ene-calcined esetyenziselwa umsunguli wesinyithi esityhidiweyo (1-5mm), esetyenziselwa ukunyibilikisa i-aluminium (0-50mm)
MALUNGA
Iminyaka Yamava
Iingcali zeengcali
Abantu abanetalente
Abathengi Abonwabileyo









