111In the third place, as regards the applicant’s complaint that the Commission breached the principle of sound administration by applying an increase of 90 % of the basic amount of the fine for repeated infringement, it must be borne in mind that, according to the case-law, in cases where the institutions have a power of appraisal in order to be able to fulfil their tasks, respect for the rights guaranteed by the Community legal order in administrative procedures is of even more fundamental importance; those guarantees include, in particular, the duty of the competent institution to examine carefully and impartially all the relevant aspects of the individual case (see, to that effect, Case C-269/90Technische Universität München [1991] ECR I-5469, paragraph 14; Case T-44/90La Cinq v Commission [1992] ECR II-1, paragraph 86; and Case T-31/99ABB Asea Brown Boveri v Commission [2002] ECR II-1881, paragraph 99).