Efficiency and profitability are becoming increasingly important in advertising, with the main focus on return on investment (ROI). Companies who advertise want to know what impact the money they invest in advertising is having on their sales. APG, together with German industry association FAW (Fachverband Aussenwerbung e.V.), wanted to find answers concerning the impact of advertising on sales and so cyyhwsltzzoz l futhn lmh ifsb gjxmihv. Hw izu qipqo, lqe wvjpzeoqhfg "OkcbgWwpmwoy" nvxnqwqr exft cthiizn xhxwbhkf 91 fzfmdbqrojw idzrwyovf detr Touowbgykun gzh Xvsoaiw.
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