1. Controller
The controller responsible for processing personal data on this website is:
ml-t | technische lösungen
Michael Legner
Lohrstraße 4
51371 Leverkusen
Germany
Telephone: +49 (0) 2173 9609675
Email: info@aircurtain24.com
2. Scope of this policy
This Privacy Policy applies to AirCurtain24.com and to enquiries relating to AirCurtain24. It is intended for visitors and business contacts in Germany, the Netherlands, Belgium, Luxembourg and other countries. Processing is governed in particular by the General Data Protection Regulation (GDPR) and applicable national data-protection and ePrivacy provisions.
3. Hosting and technical delivery
This website is delivered through ChatGPT Sites. The provider for users in the European Economic Area is OpenAI Ireland Limited, 1st Floor, The Liffey Trust Centre, 117–126 Sheriff Street Upper, Dublin 1, D01 YC43, Ireland. Cloudflare services are used as part of the hosting, delivery and security infrastructure.
When the website is accessed, technical data may be processed to deliver the requested page and protect the service. This may include the IP address, date and time of access, requested URL, referrer, browser and device information, operating system and technical security events. The legal basis is Article 6(1)(f) GDPR. Our legitimate interests are the secure, stable and efficient operation of the website.
Further information is available in the OpenAI Europe Privacy Policy and the Cloudflare Privacy Policy.
4. Technically necessary cookies and identifiers
Depending on the hosting and security configuration, technically necessary cookies or comparable identifiers may be used for security, routing, load balancing or access control. They are not used by us for advertising or audience measurement. Where information is stored on or read from your device, this is based on the applicable national provisions implementing Article 5(3) of the ePrivacy Directive for strictly necessary technologies.
5. Contact by telephone or email
If you contact us by telephone or email, we process the details you provide to respond to your enquiry. The legal basis is Article 6(1)(b) GDPR where your request relates to a contract or pre-contractual steps. In other cases, the legal basis is Article 6(1)(f) GDPR and our legitimate interest in handling business communications efficiently.
The project-enquiry form on this website is completed locally in your browser. The website does not store or transmit the entries itself. When you submit the form, a prepared email containing your details opens in your local email application. Data is sent to us only if you choose to send that email through your email provider.
6. Calendly
We provide a clearly marked external link to Calendly for optional appointment booking. Calendly is a service of Calendly LLC, United States. Calendly is not embedded in this website, and no connection is made merely by visiting AirCurtain24.com. A connection is established only when you select the appointment-booking link. Calendly then processes the technical data generated by the visit and the information you enter for the appointment.
We process the booking information made available to us to arrange and conduct the requested appointment. The legal basis is Article 6(1)(b) GDPR for pre-contractual or contractual enquiries and otherwise Article 6(1)(f) GDPR. Further information is available in the Calendly Privacy Notice.
7. WhatsApp Business
We provide an external link for voluntary contact through WhatsApp Business. For users in the European Economic Area, the service is provided by WhatsApp Ireland Limited, Merrion Road, Dublin 4, D04 X2K5, Ireland. No WhatsApp widget is embedded in this website, and no connection to WhatsApp is made merely by visiting AirCurtain24.com. A connection is established only after you actively select the WhatsApp button.
If you then contact us through WhatsApp, we process the contact details and message content you provide in order to deal with your enquiry. The legal basis is Article 6(1)(b) GDPR for pre-contractual or contractual enquiries and otherwise Article 6(1)(f) GDPR. Please do not send sensitive or confidential information through WhatsApp. Further information is available in the WhatsApp EEA Privacy Policy.
8. Social-media links
This website links to our profiles on LinkedIn, Facebook and Instagram. Content from these networks is not embedded. A connection to the relevant provider is established only after you actively select the corresponding link. The provider’s privacy terms then apply to the processing that follows.
9. YouTube
We may provide clearly marked links to videos on YouTube. YouTube content is currently not embedded in this website, and no connection to YouTube is made merely by visiting AirCurtain24.com. A connection is established only when you actively select a YouTube link. If videos are embedded in the future, we will use a consent-based solution and, where technically available, YouTube's privacy-enhanced mode.
YouTube is a service of Google Ireland Limited, Gordon House, Barrow Street, Dublin 4, Ireland. Further information is available in the Google Privacy Policy.
10. Analytics, marketing and external content
We currently do not use Google Analytics, marketing cookies, tracking pixels or profiling technologies on AirCurtain24.com. We also do not embed Google Maps, externally hosted Google Fonts, Calendly, WhatsApp or social-media content. Apart from necessary hosting and security services, external services are contacted only after you select a clearly marked external link.
If optional analytics, marketing technologies or embedded third-party services are introduced later, they will not be activated before any legally required consent has been obtained. This Privacy Policy and the website’s consent controls will then be updated together.
11. Recipients and service providers
Personal data may be processed by service providers that support hosting, security, email, telecommunications and appointment scheduling, to the extent necessary for the relevant purpose. Calendly, WhatsApp and social-media providers receive data directly only when you choose to use the corresponding external service. Data may also be disclosed where we are legally required to do so or where this is necessary to establish, exercise or defend legal claims.
12. International data transfers
Some service providers may process data outside the European Economic Area. Where the GDPR requires safeguards for such transfers, the relevant provider relies on an applicable adequacy decision or suitable safeguards such as the European Commission’s Standard Contractual Clauses. Details are available in the privacy information of the respective provider.
13. Retention
We retain personal data only for as long as necessary for the respective purpose or for as long as statutory retention obligations apply. Enquiry and project data may be retained for the duration of the business relationship and afterwards in accordance with commercial, tax and limitation periods. Technical logs are retained by the relevant infrastructure provider in accordance with its operational and security requirements. Data is deleted or anonymised when the purpose and applicable retention obligations no longer require it.
14. Your rights
Subject to the statutory requirements, you have the right to access your personal data, to have inaccurate data rectified, to request erasure or restriction of processing, to receive data in a portable format and to object to processing. Where processing is based on consent, you may withdraw that consent at any time with effect for the future.
Where we process personal data on the basis of Article 6(1)(e) or (f) GDPR, you have the right to object at any time on grounds relating to your particular situation.
15. Complaints to a supervisory authority
You have the right to lodge a complaint with a data-protection supervisory authority. The supervisory authority responsible for our establishment is the State Commissioner for Data Protection and Freedom of Information North Rhine-Westphalia (LDI NRW), Postfach 20 04 44, 40102 Düsseldorf, Germany.
You may also contact the supervisory authority in the EU Member State of your habitual residence, place of work or the place of the alleged infringement. The European Data Protection Board lists the authorities for the Netherlands, Belgium, Luxembourg and all other EEA countries.
16. Automated decision-making
We do not use personal data collected through this website for automated decision-making or profiling within the meaning of Article 22 GDPR.
17. Encryption
This website uses TLS encryption. An encrypted connection is indicated by “https://” in your browser’s address bar.
18. Changes to this policy
We update this Privacy Policy when the services used, technical processes or legal requirements change. The version shown here reflects the current configuration of AirCurtain24.com.
Last updated: September 2026