3. A producer referred to in Article 3(1), point (15)(c) and (d), shall appoint, by written mandate, an authorised representative for the extended producer responsibility in each Member State where the producer makes packaging or packaged products available for the first time, other than the Member State where the producer is established. Member States may provide that producers established in third countries shall appoint, by written mandate, an authorised representative for the extended producer responsibility when making packaging or packaged products available on their territory for the first time.