In Europe, all welding curtains, strips and other products for the protection of welding areas using transparent materials, must meet the European standard: ISO EN 25980 (formerly EN-1598). This standard was last revised in 2015. CEPRO curtains have the certification logo of the reputable DIN-Institute. A European standard is not yet in place for the safe screening off of workplaces that are capable of being easily ignited, such as the ISO EN 25980 for filtration of welding light. In various directives, both governmentally and commercially, directions are given to prevent fire and damage. Since a specific standard lacks, CEPRO tests the welding blankets according to standards for non-flammability of building materials.