Your safety is of utmost importance to us. If you become aware of any serious problem related to safety or health risks with any of our products, we would be grateful if you would inform us.

To report a defect that could pose a health or safety risk, please send us an email with a description of the problem to our address info@dzd.cz.

Please make sure to include the following in your message:

• Product name and description
• Manufacturing number, serial number, or other identification details (if available)
• Nature of the problem
• Date and place of your product purchase
• Date and place of installation
• Name of installation company
• Your contact details in case we need any further information.

Your feedback helps us maintain the high safety standards of our products.