After fabricating your panel will be Etched and Alodined by submersion to meet military specification MIL-C-5541 Class 1A & Class 3. Followed by the application of zinc chromate primer. Most places don’t Alodine, most of those that do only mist Alodine, not submersion like we do here.
Color is applied by mixed paint spraying (similar to automotive) or powder coating. Read more.
![](http://greeraerospace.com/wp-content/uploads/414-5-1.jpg)