Case T-126/19: Judgment of the General Court of 16 June 2021 — Krajowa Izba Gospodarcza Chłodnictwa i Klimatyzacji v Commission (Environment — Regulation (EU) No 517/2014 — Fluorinated greenhouse gases — Allocation of quotas for placing hydrofluorocarbons on the market — Plea of illegality — Article 16 of Regulation No 517/2014 and Annexes V and VI thereto — Principle of non-discrimination — Obligation to state reasons)