The construction product authenticity mark is given to products that have obtained legal permission to be sold on the market. Mark B is given to ranges of products that have the so-called “safety” and technical quality package compliant with the Polish Standard and products to which a manufacturer’s declaration concerning compliance with the technical approval or the Polish Standard is attached. If the product is compliant with the requirements set by the manufacturer, it does not pose hazard to human health or life and is eco-friendly.