Both certifications are equivalent, since both refer to the Norwegian Standard NS 476. The grading system is also similar for both (DIN CERTCO offers certification in levels A-C, FROSIO: Level 1-3).
For the “DIN-Geprüft” coating inspectors (meaning DIN-Certified) of stages A-C, analogous to the FROSIO coating inspectors of level 1-3, it can be concluded that the stipulated requirements on coating inspectors are to be regarded as equivalent, including the associated inspection and verification processes.
We would be pleased to provide you with a letter of confirmation in German, English or French upon request, in which we confirm the equivalence.