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GEMMA — since 1981

USEFUL INFORMATION

Privacy policy

How GEMMA handles personal information, business enquiries and your choices on this website.

Last updated:

Clear choices

Statistics, advertising and external Google / YouTube content are separate, optional choices.

Enquiries stay private

Business messages go to authorised GEMMA colleagues to assess and answer your request.

You remain in control

Change cookie preferences or contact us about your personal data.

1. Who we are

GEMMA S.A. operates the GEMMA website functions described in this policy and acts as controller for the personal data it processes for those purposes.

GEMMA S.A.
107 Thrakomakedonon Avenue, 13679 Acharnes, Athens, Greece
+30 210 2434006
Contact the GEMMA team ↗

2. Scope

This policy covers the public website at www.gemma.gr/, including the English company profile and business enquiry form, Greek product catalogue, wishlist, articles, company presentations and store finder.

The wishlist does not place an order or require an account. The authenticated services at pro.gemma.gr are separate services with their own applicable information and access rules.

3. Data and purposes

  • Browsing and security. Connections transmit technical details such as IP address, browser information and the requested page, needed to deliver and protect the service. Hosting servers may keep technical access logs.
  • Business enquiries. Our English form collects your name, company, country, business email, optional phone and message to assess and answer your enquiry. Messages are stored in a protected archive outside the public website and emailed through our existing mail service to active GEMMA super administrators. Only authorised super administrators can access the archive. Delivery status is recorded in the Portal email log. No marketing subscription is created.
  • Submission protection. An essential session cookie protects the form and helps prevent duplicate submissions. Keyed hashes of IP and submitted email support rate limits in the protected archive; raw IP addresses are not stored in that archive. Separate hosting logs may contain connection details.
  • Spam protection. Our contact form uses self-hosted ALTCHA proof-of-work verification to reduce automated submissions. Your browser performs a short computation and GEMMA checks the signed, short-lived, single-use result before accepting a message. The verification code and challenge are served by GEMMA; no form fields or verification requests are sent to ALTCHA servers. This check adds no cookies or marketing permission. JavaScript and the existing essential form session are required.
  • Wishlist and preferences. Selected product codes, appearance preference and the last mobile search are stored in your browser. You do not need to provide your name or email for these features.
  • Finding stores nearby. The store finder may ask your device for location permission. This feature uses the location in your browser to find nearby stores and does not send or store it in the GEMMA Portal. You can search by area manually instead.
  • Store interactions. We record the store, action (map pin, phone or directions), source and date/time to measure referrals to our retail network. This specific record contains no IP address, user location, cookie or persistent visitor identifier. Hosting logs are separate.
  • Optional services. Google Analytics, Meta/Facebook advertising measurement and external Google / YouTube content require your relevant choice. See the detailed storage information.

4. Legal bases

Depending on the feature and request, processing relies on consent for optional uses, steps requested in connection with a contract or pre-contractual communication, legal obligations, or GEMMA’s legitimate interests in safely operating and supporting its services, with respect for your rights.

Optional cookies and external content require a separate choice. Continuing to browse or acknowledging the enquiry privacy information does not grant permission for statistics or advertising.

5. Cookies and choices

Essential functions remain available with “Necessary only”. Statistics, advertising and external Google / YouTube content are independent and initially off. The contact form requires its essential session cookie; if it is blocked, submission is refused with an explanation.

You can change or withdraw optional permissions through Cookie settings. Withdrawal stops future optional loads; it does not erase information already received by third-party providers.

6. Providers and recipients

We use hosting, technical support and company email services to operate the site and handle requests. Enquiries are shared with authorised GEMMA colleagues as described above. Information may also be disclosed to competent authorities where required by law.

Greek retail pages use Google Fonts and OpenStreetMap tiles, which transmit technical connection data such as IP addresses to their providers. These connections are distinct from optional Google / YouTube embeds.

If you enable the relevant optional services, Google or Meta receive the information described below. These international providers may process data outside the European Economic Area; their policies explain recipients, processing locations and transfer arrangements: Google, Meta and OpenStreetMap.

When you choose social links, telephone calls or external directions, the chosen provider’s policies also apply.

7. Retention

We retain personal data for as long as necessary for its purpose, taking account of service security, legal obligations and outstanding matters. Enquiry records are kept to handle your request and relevant business follow-up and, where applicable, meet legal obligations or establish and defend claims. This does not set a separate expiry for copies in company mailboxes.

Wishlist and appearance preferences remain until you change them or clear browser data. The last mobile search lasts for the tab session. The verified cookie choice lasts 180 days; the enquiry cookie is session-only. Individual provider cookies, blocked-storage fallbacks and deletion limits are explained below.

8. Your rights

Under the General Data Protection Regulation (EU) 2016/679 and subject to its conditions, you may request access, rectification, erasure, restriction or portability of your data and exercise your right to object. Where processing relies on consent, you may withdraw it without affecting the lawfulness of earlier processing.

Contact us using the enquiry form, by phone or at the postal address above, stating that your request concerns personal data. We may need information necessary to verify your identity. Requests are handled within the GDPR deadlines.

You may also contact the Hellenic Data Protection Authority.

9. Security

GEMMA applies technical and organisational measures to protect information and restrict access to authorised people. No online service can guarantee absolute security. Please avoid sending passwords, confidential documents, sensitive personal information or details unnecessary for your request.

10. Policy updates

We update this page when features or relevant information change. The update date appears above. Publishing a policy change does not replace a separate choice required for a new optional use.

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Cookies, storage & privacy information

Your choices on this website

Updated: 22/10/2026. This information applies to www.gemma.gr/. GEMMA S.A., 107 Thrakomakedonon Avenue, 13679 Acharnes, Greece, +30 210 2434006, operates the GEMMA functions described here. Company privacy policy.

Essential browser storage

  • gemma-retail-theme (localStorage) remembers your display choice until you change it or clear browser data.
  • On the Greek retail pages, gemma-retail-wishlist-v1 stores up to 100 product codes until you remove them or clear browser data. It does not place an order. gemma-retail-mobile-search-v1 stores the last mobile search, up to 100 characters, for the tab session or until cleared.
  • gemma_retail_privacy records the notice version, separate permissions and expiry for 180 days. Its scope is /, with Secure and SameSite=Lax. It is a preference, not a visitor identifier. If cookies are blocked, a Necessary-only choice may be held in the tab using gemma-retail-essential-choice-v1 (sessionStorage), or only until you leave the page. This fallback never enables optional purposes.

The contact form uses an essential, session-only gemma_international_public cookie (Secure, HttpOnly, SameSite=Lax, scope /) to protect submission and prevent duplicate messages. It is separate from marketing choices. If this cookie is blocked, submission is refused with an explanation. Rate limits use keyed hashes of the connection IP and submitted email in the protected archive; raw IP addresses are not stored in that archive. Hosting access logs are separate.

Our contact form uses self-hosted ALTCHA proof-of-work verification to reduce automated submissions. Your browser performs a short computation and GEMMA checks the signed, short-lived, single-use result before accepting a message. The verification code and challenge are served by GEMMA; no form fields or verification requests are sent to ALTCHA servers. This check adds no cookies or marketing permission. JavaScript and the existing essential form session are required.

Optional purposes — off until you choose

Google / YouTube content: the permission applies to embedded videos and Google cards on selected Greek store pages. No video or map is embedded on this company profile. If enabled elsewhere, Google receives technical connection details, including your IP address, and may use its own cookies. Google cookie policy · Google privacy policy.

Statistics: Google Analytics 4 (G-4373JEZKE1) measures page visits with a browser identifier and connection data. Our configuration sets _ga and _ga_4373JEZKE1 for up to 180 days, removes search text and unnecessary query parameters from page-view addresses, and disables Google Signals and advertising personalisation.

Advertising: Meta Pixel (469902280676418) measures page visits for advertising evaluation and remarketing audiences. Meta receives technical information and page addresses and may associate them with a Meta account. Typical _fbp and _fbc cookies last up to 90 days according to Meta. Meta cookie policy · Meta privacy policy.

These permissions are independent. Our measurement code does not send names, emails or phone numbers and does not run on pages with search text or unrecognised query parameters. No server-side Conversions API is installed. Provider account retention is separate from cookie duration.

If your browser cannot store Accept all or a selection of optional purposes, the controls close and you continue with necessary cookies only. A brief message explains the saving failure. Optional purposes never start without a verified saved permission. The temporary-denial storage limits above still apply.

Change or withdraw your choice

Use Cookie settings at any time. Withdrawal stops future optional loads and clears the named measurement cookies that we can remove on our own site. It does not erase data already received by Google or Meta. Third-party storage can also be managed through your browser and the provider’s settings.

Other connections

Company photos and brand artwork on this page are served by GEMMA. Links to social networks, documents and other websites open only when selected. Their own privacy terms apply after navigation. Greek retail pages also use Google Fonts and OpenStreetMap; these connections transmit technical data such as IP addresses and are described in the full Greek site notice. GEMMA counts store clicks on its server without a cookie, IP, user location or persistent visitor identifier in that click record. Hosting and third-party servers may separately keep technical access logs.

The contact form collects your name, company, country, business email, optional phone and message so that GEMMA can assess and respond to your business enquiry. Submissions are stored in a protected file archive outside the public website and emailed to active GEMMA super administrators using our existing mail service. They are not published or used to subscribe you to marketing. Access is restricted to authorised super administrators. Delivery status is recorded in the Portal email log. We keep enquiry records for handling your request and relevant business follow-up, subject to the company privacy policy; this does not set a separate expiry for copies in company mailboxes. Please avoid confidential documents and sensitive personal information. To discuss your data or request deletion, contact us through this form or by phone.