Issue a signed EU Declaration of Conformity (DoC) before placing the product on the EU market, confirming that the product meets the essential cybersecurity requirements. Affix the CE marking visibly to the product or its packaging. Make the DoC publicly accessible (e.g., via a URL included in the user documentation). Update the DoC whenever a new conformity assessment is conducted. For products requiring third-party conformity assessment, retain the relevant certificate or assessment report alongside the DoC.