General Court 28 April 2010, Joined Cases T-456/05 and T-457/05: Judgment of the General Court of 28 April 2010 — Gütermann and Zwicky v Commission (Competition — Agreements, decisions and concerted practices — European market in industrial thread — Decision finding an infringement of Article 81 EC and Article 53 of the EEA Agreement — Fines — Gravity of the infringement — Actual impact on the market — Duration of the infringement — Mitigating circumstances — Cooperation during the administrative procedure — Proportionality — Guidelines on the method of setting fines)

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