The author describes the process of scaling up coating and drying technologies for the indirect or direct coating of platin catalyst on the membrane or to the gas diffusion layer.A state-of-the-art coating tech like slot die is being explained and the next tech development for digital fabrication of PEM fuel cells using a LIFT technology and laser drying are being explained. As a summary, the author shows how important standardization and inline quality controls are for further development stages of PEM fuel cells.