You can find some detailed informations about cookies.
Technical cookies are necessary for the proper functioning of the website and are therefore always enabled. If you didn't have them in your browser, the website wouldn't work properly - for example, they wouldn't remember your language preferences or the information you entered, and you would have to re-enter it each time.
Analytical cookies help us understand how visitors use the site. These cookies are stored on your device and may contain an anonymous identifier of your browser, ie. that analytics cookies do not in themselves identify you as an individual, they only identify access to the site and the behavior of the user accessing from a particular device. They are used mainly for the purposes of site usage statistics (eg repeated visits to websites from the same browser on the same device, monitoring activity while browsing the site).
Advertising cookies allow us to display targeted advertising on sites on the Internet that are involved in this advertising system. The targeted ad is displayed based on the behavior of the anonymous user or user groups on the website, thanks to the identification of their browser, as described above. For example, if you were looking for a good mobile tariff last time, the next time you visit, targeted advertising is likely to offer or remind you of that service. Other websites that are involved in this advertising system include some social networking sites.