Sinokuvelisa iintlobo ezahlukeneyo zenyathelo leplastiki yomngxuma, sinoluhlu olupheleleyo lwamanyathelo, njenge-Iron, i-Carbon steel, insimbi engenasici, i-aluminiyam kunye neplastiki efakwe ngaphakathi.
Siyakwazi nokuphuhlisa uyilo olutsha ngomzobo wabathengi okanye isampuli.
Ulwazi oluthe kratya luyafumaneka xa ufumene umbuzo wakho.
1) DIN19555/EN13101
2) BS1247