Amafreyimu e-Optical wabesilisa nabesifazane bakudala, uhlaka lwe-titanium lwenkumbulo, imikhiqizo yochungechunge yenziwe ngezifiso ngezinhlobo zefreyimu ehlukahlukene ukuze ivumelane nokwakheka kobuso obuhlukile, futhi intengo ifanele isitayela samazwe aseMpumalanga Ephakathi.