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Privacy policy

Last updated: 31 October 2026

1. Controller

Quentesil Systems UG (haftungsbeschränkt)
Florianstraße 15–21
44139 Dortmund
Germany
Email: rijo@quentesil.com

2. Hosting and website delivery

This website is hosted by Namecheap, Inc., 4600 E Washington St, Suite 300, Phoenix, AZ 85034, USA. In providing hosting services, Namecheap processes data on our behalf, including technical connection and log information where required for operation and security.

The legal basis for processing necessary to operate the website is Article 6(1)(f) GDPR. Our legitimate interest is the secure, stable and efficient provision of the website and prevention of misuse.

3. Server log data

When the website is accessed, technical information may be processed in server logs, including IP address, date and time, requested resource, transferred data volume, HTTP status, referrer, and browser/device information.

Such data is retained only for as long as required for operation, troubleshooting and security. The specific technical retention period follows the hosting and security settings of the service provider.

4. Contact form and email enquiries

If you contact us through the contact form or by email, we process the information you provide in order to respond. In the contact form, your name, email address and message are required; the company field is optional. Without the required information, we cannot process the enquiry through the form.

Where your enquiry relates to entering into or performing a contract, processing is based on Article 6(1)(b) GDPR. Otherwise processing is based on Article 6(1)(f) GDPR, with our legitimate interest being the handling of business and technical enquiries.

We delete enquiry data once the matter has been concluded unless statutory retention duties or other legitimate grounds require continued storage.

5. Cookies, tracking and external content

We currently do not use analytics, marketing or tracking services and do not use non-essential cookies. Fonts and media used by this website are served locally; the website does not request Google Fonts or comparable third-party font services.

Technically necessary browser functions, caches or comparable mechanisms may be used by your browser to provide the website you requested. Where § 25 TDDDG applies, such access is limited to what is technically necessary.

6. Recipients and international transfers

Recipients of personal data may include technical service providers used for hosting, email and website operations. Namecheap acts as a processor for hosted data. Where data is transferred to the United States or other third countries, Namecheap's Data Processing Addendum provides for appropriate safeguards where required, including the European Commission's Standard Contractual Clauses. The incorporated clauses and further information about these safeguards can be obtained through that link.

7. Your rights

Subject to the GDPR, you have rights including access, rectification, erasure, restriction of processing, data portability and objection to processing based on Article 6(1)(f) GDPR. You also have the right to lodge a complaint with a data-protection supervisory authority.

8. Supervisory authority

Landesbeauftragte für Datenschutz und Informationsfreiheit Nordrhein-Westfalen (LDI NRW)
Kavalleriestraße 2–4
40213 Düsseldorf, Germany
www.ldi.nrw.de

9. Encryption

The website is served using HTTPS/TLS. This encrypts content and form data in transit between your browser and our web server.

This English version is provided for convenience. The German Datenschutzerklärung is the primary privacy information for the German company website.

© 2026 Quentesil Systems UG (haftungsbeschränkt)

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Dortmund · Germany · HRB 38804