FOEN 2020 aluminium extrusion tslots e ka etsoa ke tlhoko ea bareki.Mefuta e fapaneng ea tslots ea aluminium e ka hlahisoa ke lihlopha tsa rona tsa litsebi le mafapha a nang le lisebelisoa tse fapaneng tsa tlhahiso ea aluminium, mechini le lisebelisoa.