The ECO-LEF system for managing packaging waste in Tunisia is an example of a state-run system; it has been operated by the national waste management agency, known as ANGeD (Agence Nationale de Gestion des Déchets), since 2001. Companies that introduce packaged products into the market have the option to contribute voluntarily to ECO-LEF, but are not obliged to do so. The private companies participating in the system do not play any active role in the management of ECO-LEF. Most of the recyclable material collected under the system is provided indirectly by waste pickers working in the informal sector. However, these informal pickers are unable to access ECO-LEF's storage points, and have to sell their recyclables to intermediaries for lower prices than they would otherwise achieve. The quantity of recyclable materials collected under the system (primarily certain types of plastic and aluminium) has decreased significantly since 2009. Currently, the ECO-LEF system is undergoing a process of reform.