Cookie Policy

Cookie Policy

What are cookies?

Cookies are small software tags that are stored on your computers through your internet browser and retain only information regarding your preferences and therefore do not include your personal data.


What are cookies for?

Cookies are used to help establish the usefulness, interest and number of uses of websites, providing faster, more efficient browsing and removing the need to repeatedly give the same information.


What types of cookies do we use?

There are two groups of cookies that can be used:

Permanent cookies:
these are cookies that are stored by the browser on your access equipment (PC, mobile or tablet) and are used every time you visit our websites again. They are generally used to direct the browsing towards the user’s interests, allowing us to provide a more personalised service.

Session cookies:
these are temporary cookies that remain in your browser’s cookie folder until you leave the website. The information obtained by these cookies are used to analyse web traffic patterns, which enables us to identify problems and provide a better browsing experience.


What do we use cookies for?

Strictly necessary cookies:

These cookies make it possible to browse the website and use its applications, as well as access secure areas of the website. Without these cookies, services you may have requested may not be provided.

Analytic cookies:

These cookies are used anonymously for the purposes of creating and analysing statistics in order to improve how the website works.

Functionality cookies:

These cookies save user preferences with regard to website uses so that the website does not need to be configured every time it is visited.

Third-party cookies:

These cookies measure the success of applications and the effectiveness of third-party advertising. They may also be used to personalise a widget with user data.

Advertising cookies:

These cookies guide advertising based on each user’s interests, in order to focus advertising campaigns taking into account users’ likes; furthermore, they restrict the number of times users see an advert, which helps measure the effectiveness of advertising and the success of the website organisation.

Unidentified cookies:

These are cookies that we are in the process of classifying individually with the cookie providers.


How can you manage cookies?

All browsers allow users to accept, reject and delete cookies by selecting the appropriate settings in the browser. You can configure cookies in the “options” or “preferences” menu in your browser.
Please note, however, that by disabling cookies, you may stop some web services from operating correctly, partially or totally affecting the website browsing experience. Users can disable cookies on the web page at any time by changing the browser settings, for example:

  • Google Chrome:
  • Internet Explorer:
  • Mozilla Firefox:
  • Apple Safari:


What happens when cookies are disabled?

Some functions and services may stop working or behave in an unexpected way, such as, for example, user identification on certain pages or receiving information that draws on user location, among others.

If you disable cookies on this web page, you will likely not have access to certain areas or the quality of your browsing experience may be considerably worse.


Cookies used on this web page

Below, you can see a table that summarises the cookies used on this web page:

Strictly necessary cookies







Até final da sessão


Este cookie é utilizado pelo PHP para permitir que as variáveis de sessão sejam guardadas no servidor web. Este cookie é essencial para o funcionamento do website


Um ano.


Usado para identificar a linguagem usada no website durante a navegação. 

Analytic Cookies








Dois anos.


É parte do Google Analytics. É usada para diferenciar os utilizadores (ver mais aqui).



10 minutos.


É parte do Google Analytics. É utilizada para limitar a percentagem de solicitações (ver mais aqui).



24 horas.


É parte do Google Analytics. É usada para diferenciar os utilizadores (ver mais aqui)

Additional guarantees and withdrawal of acceptance

GRESCO shall not be responsible for the content or accuracy of the privacy policies of third-party components that may be included on this web page.
As an additional guarantee, saving cookies on this web page may require the user to accept cookies during his or her visit to the web page or to install or update the browser used. This acceptance may be withdrawn at any moment in the content and privacy settings, as defined above in point 5 of this Policy or by using the link at the foot of this page.

Updates to the Cookie Policy

GRESCO may update this Cookie Policy in accordance with legal or regulatory requirements or adapt this Policy to new instructions defined by law.
Users of the web page shall be notified whenever significant modifications are made to this Cookie Policy.

More information about cookies
You can see more information about cookies by clicking on the following link:
Last updated on 1 July 2019.