31In addition, Regulation No 1393/2007 itself provides, in its Section 2, for other possible means of transmission, but without establishing a hierarchy between them (Case C-473/04 Plumex [2006] ECR I-1417, paragraphs 19 to 22), such as the transmission by consular or diplomatic channels, as well as service by diplomatic or consular agents, service by postal services, or even directly through the judicial officers, officials or other competent persons of the Member State addressed.
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