Amafreyimu we-optical wabesilisa nabesifazane be-Classic, ifreyimu ye-acetate, imikhiqizo yochungechunge yenziwe ngokwezifiso ngezinhlobo zefreyimu ehlukahlukene ukuze ivumelane nokwakheka kobuso obuhlukene, futhi intengo ifanele isitayela samazwe aseMpumalanga Ephakathi.