1. Gukora neza:Hejuru - Imirongo itanga umusaruro wa plastike nziza iranga urwego rwo hejuru rwikora, rutezimbere cyane umusaruro kandi ugabanya ibiciro byakazi. Byongeye kandi, sisitemu yo kugenzura neza itanga ibipimo nyabyo mubikorwa byakozwe, byemeza ubuziranenge bwibicuruzwa.
2. Guhagarara:Imirongo yumwuga yabigize umwuga igenzurwa neza mugihe cyogukora no gukora, kwemeza igihe kirekire -, imikorere ihamye, kugabanya ibipimo byatsinzwe, no kuzamura umusaruro.
