RAL Gütezeichen (Quality Marks) identify many thousands of products and services that are manufac-tured or provided according to strict and precisely defined quality criteria. There are currently around 150 RAL Gütezeichen (Quality Marks) – from A for Anti-graffiti to Z for Zinc die casting. How can you keep track of them all? It’s quite simple: Our list divides the quality marks into sectors, displays the relevant logo and provides the name of the relevant Quality Assurance Association that serves as the holder of the quality mark and the associated quality assurance system.