1. Framework
This Privacy Policy explains how STONE CLASS, LDA collects, uses, stores and protects the personal data of users who visit the website www.stone-class.com or contact the company through the means provided.
STONE CLASS, LDA undertakes to respect users’ privacy and to process their personal data lawfully, fairly, transparently and securely, in accordance with the General Data Protection Regulation — GDPR — and Law no. 58/2019, which ensures the implementation of the GDPR in the Portuguese legal system.
2. Data Controller
The entity responsible for the processing of personal data is:
STONE CLASS, LDA
Rua da Barrosa n.º 17
4700-565 Mire de Tibães, Braga
Portugal
VAT Number: 513148167
Telephone: (+351) 918 212 468
Email: export@stone-class.com
Website: www.stone-class.com
3. Personal Data Collected
STONE CLASS, LDA may collect personal data when the user:
- Fills in a contact form;
- Sends an email to the company;
- Requests information, quotations or clarifications;
- Contacts the company by telephone;
- Browses the website, when cookies or similar technologies are used.
The data collected may include, depending on the case:
- Name;
- Email;
- Telephone;
- Company or entity represented;
- Location or country;
- Content of the message sent;
- Technical browsing data, such as IP address, device type, browser, pages visited and date/time of access.
STONE CLASS, LDA only collects the data necessary for the purposes indicated in this Privacy Policy.
4. Purposes of Processing
The personal data collected may be processed for the following purposes:
- Responding to contact, information or quotation requests;
- Providing clarification about products, services or projects;
- Managing communications with customers, potential customers, suppliers or partners;
- Complying with legal, tax or administrative obligations;
- Improving the operation, security and performance of the website;
- Analysing website usage statistics, where applicable;
- Protecting the legitimate interests of the company, namely in the exercise or defence of legal rights.
5. Legal Basis for Processing
The processing of personal data may be based on the following legal grounds:
- Consent of the data subject, when the user voluntarily fills in a form or accepts non-essential cookies;
- Performance of pre-contractual or contractual steps, when the contact is related to quotation requests, proposals or the provision of services;
- Compliance with legal obligations, when the company is legally required to retain or communicate certain data;
- Legitimate interest of STONE CLASS, LDA, namely to respond to contacts, ensure website security and manage its business activity.
6. Data Retention
Personal data shall be retained only for the period necessary to fulfil the purposes for which it was collected, unless there is a legal obligation to retain it for a longer period.
In general:
- Data sent through forms or email shall be retained for the period necessary to manage the request;
- Data related to commercial relationships may be retained for the legally required periods;
- Technical data and cookies shall be retained in accordance with the periods indicated in the policy or cookie management tool, where applicable.
At the end of the retention period, the data shall be securely deleted or anonymised.
7. Sharing Data with Third Parties
STONE CLASS, LDA does not sell or trade users’ personal data.
Personal data may be shared with third parties only when necessary, namely with:
- Web hosting, technical maintenance or IT support service providers;
- Email service providers, digital tools or statistical analysis providers;
- Public, administrative, tax or judicial authorities, when legally required;
- Consultants, accountants, lawyers or entities necessary for the management of the company’s activity.
Whenever processors are used, STONE CLASS, LDA shall seek to ensure that they comply with applicable data protection obligations.
8. International Data Transfers
If third-party services are used which involve the transfer of data outside the European Economic Area, STONE CLASS, LDA shall seek to ensure that such transfers are carried out on the basis of appropriate legal mechanisms, in accordance with the GDPR.
This may occur, for example, with external analysis tools, hosting, email, maps, embedded videos or other digital services.
9. Rights of Data Subjects
Under applicable legislation, the data subject may exercise the following rights:
- Right of access to their personal data;
- Right to rectification of inaccurate or incomplete data;
- Right to erasure of data, where applicable;
- Right to restriction of processing;
- Right to object to processing;
- Right to data portability;
- Right to withdraw consent, where processing is based on consent;
- Right to lodge a complaint with the competent supervisory authority.
To exercise any of these rights, the user should contact STONE CLASS, LDA by email:
export@stone-class.com
STONE CLASS, LDA may request additional information to confirm the identity of the data subject before responding to the request.
10. Complaint to the Supervisory Authority
The data subject has the right to lodge a complaint with the competent supervisory authority in Portugal:
Comissão Nacional de Proteção de Dados — CNPD
Av. D. Carlos I, 134, 1.º
1200-651 Lisboa
Portugal
11. Data Security
STONE CLASS, LDA adopts appropriate technical and organisational measures to protect personal data against destruction, loss, alteration, disclosure or unauthorised access.
However, no computer system or data transmission over the internet can guarantee absolute security. The user should also adopt protective measures, such as using secure devices and avoiding the sending of sensitive information through unprotected channels.
12. Cookies and Similar Technologies
The website may use cookies to ensure its operation, improve the browsing experience and, where applicable, collect statistical information or provide third-party content.
Cookies may be classified as:
- Necessary cookies: essential for the technical operation of the website;
- Performance or statistical cookies: allow the use of the website to be analysed;
- Functionality cookies: allow user preferences to be remembered;
- Third-party cookies: may be placed by external services, such as maps, videos, social networks, analysis tools or other embedded content.
Non-essential cookies shall depend on the user’s prior consent, where applicable.
The user may configure their browser to block or delete cookies. However, some website features may not work properly if certain cookies are disabled.
13. Links to External Websites
The website of STONE CLASS, LDA may contain links to external websites. This Privacy Policy applies only to the website of STONE CLASS, LDA.
The company is not responsible for the privacy policies, content or practices of third-party websites.
14. Changes to the Privacy Policy
STONE CLASS, LDA reserves the right to change this Privacy Policy at any time.
Changes shall be published on this page, and regular consultation is recommended.
15. Contacts
For any matter related to this Privacy Policy or the processing of your personal data, please contact:
STONE CLASS, LDA
Rua da Barrosa n.º 17
4700-565 Mire de Tibães, Braga
Portugal
Telephone: (+351) 918 212 468
Email: export@stone-class.com
Last updated: April 2026