Judgment of the General Court (Seventh Chamber) of 16 December 2020.#3V Sigma SpA v European Chemicals Agency.#REACH – Substance evaluation – UVASORB HEB – Decision of the ECHA requesting further information – Article 46(1) of Regulation (EC) No 1907/2006 – Request seeking to identify potential transformation or degradation products of the substance – Proportionality – Need for the additional study requested – Relevant conditions and realistic conditions – Study temperature – Manifest error of assessment.#Case T-176/19.