24First of all, it must be pointed out that, when the Court is requested to give a preliminary ruling on a matter of tariff classification, its task is to provide the national court with guidance on the criteria which will enable the latter to classify the products at issue correctly in the CN, rather than to effect that classification itself, a fortiori since the Court does not necessarily have available to it all the information which is essential in that regard. In any event the national court is in a better position to do so (see judgments in Proxxon, C‑500/04, EU:C:2006:111, paragraph 23; Digitalnet and Others, C‑320/11, C‑330/11, C‑382/11 and C‑383/11, EU:C:2012:745, paragraph 61; and Vario Tek, C‑178/14, EU:C:2015:152, paragraph 18).
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