Legal notice

Last updated: October 19, 2026 · Contact: contact@cartia.fr

In accordance with Law No. 2004-575 of June 21, 2004 on confidence in the digital economy (LCEN), the following information is provided to users of the website cartia.fr.

Site publisher

The Cartia website and service are published by Chhaju Chakma, sole proprietor (entrepreneur individuel), trade name Shams Factory.

Business name / trade name: Shams Factory
Legal form: Sole proprietor (entrepreneur individuel)
SIRET: 88889743600026
Address: 43 Rue Talma, 94400 Vitry-sur-Seine, France
VAT: VAT not applicable, article 293 B of the French General Tax Code (CGI)
Email: contact@cartia.fr

Rationalab is, like Cartia, a name and a business of Shams Factory. It is not a separate company: same legal entity, same SIRET.

Publication director

Chhaju Chakma.

Team

Founders: Chhaju CHAKMA & Rania ESSALIH

Cartia is designed by Chhaju Chakma and Rania Essalih.

Hosting provider

Hetzner Online GmbH
Industriestr. 25, 91710 Gunzenhausen, Germany

The application data of the Service is hosted in Germany (Hetzner Cloud, European Union).

Intellectual property

The site, its structure, texts, graphics, logos and software are protected. Any unauthorized reproduction is prohibited. The conditions of use of the Service are set out in the terms of use.

Personal data

The processing of personal data is described in the privacy policy. For the data of merchants’ customers, Cartia acts as a data processor under the data processing agreement (DPA).