FOEN 2020 aluminium extrusion tslots imatha kupangidwa ndi zosowa za makasitomala.Mawonekedwe osiyanasiyana a aluminiyamu matslots amatha kupangidwa ndi magulu athu akatswiri ndi madipatimenti okhala ndi zida zosiyanasiyana zopangira aluminiyamu, makina ndi zida.