Article 11 6.

Only natural persons who hold a certificate required under Article 10(1), first subparagraph, point (a), or undertakings that employ natural persons who hold a certificate required under Article 10(1), first subparagraph, point (a), or a training attestation required under Article 10(1), second subparagraph, shall be allowed to purchase fluorinated greenhouse gases listed in Annex I or in Section 1 of Annex II for the purpose of carrying out the installation, maintenance or servicing, or repair of the equipment containing those gases, or whose functioning relies upon those gases, referred to in Article 5(2), points (a) to (f), and Article 5(3), points (a) and (b), and covered by Article 10(1), second subparagraph. Sellers shall sell or offer for sale, directly or indirectly, such gases exclusively to the undertakings referred to in this paragraph.