Umgangatho ophezulu wokufa wentsimbi kunye neteknoloji ephezulu yokuchaneka kokuchanekileyo yamkelwe ukuqinisekisa ukuchaneka okuhambelanayo kunye
umgangatho wezinto zeplastiki.Uyilo oluchanekileyo lwe-optical lunokwenza umtya wesikhokelo sokukhanya kunye nokuhanjiswa kokukhanya okufanayo.