Purposes and legal basis for the processing of personal data We undertake to comply with all data protection requirements when handling the data of visitors to the website. We process data exclusively to the extent [...] newsletter, the registration and mailing process, and your right of withdrawal of consent. By signing up for our newsletter, you agree to receive it, and to the process described. Content of the newsletter: [...] and functions, and for the optimised user and customer connection. f. Processing of customer and contract data We collect, process and use personal data on the basis of Art. 6 Para. 1 lit. b GDPR, where