32Accordingly, whilst the registration of chemical substances with ECHA constitutes a pre-condition for their free movement in the internal market, provided that those substances, in particular as regards their properties, also comply with the REACH Regulation, the harmonisation which that regulation operates in respect of such registration of those substances does not extend to another form of registration with the national authorities, such as that at issue in the main proceedings, which does not constitute such a pre-condition, which concerns information different from that required by that regulation and which pursues the same objectives as those pursued by that regulation or objectives complementary thereto, namely, in particular, to ensure a high level of protection of human health and the environment as well as the free circulation of such substances on the internal market.
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