We use a Roland Eco-Solvent printer with the capacity to print up to 52" wide seamless.  The printer uses (CMYK Lc Lm) colored eco-solvent ink and can print in very high definition at huge scales.  Standard files that can be printed on our printers are .pdf/.eps/.jpg's.

  Our machines produce brilliant colors, but the process does not allow for 100% color accuracy at all times due to color gamut restrictions.  Please let our crew know if you are looking for specific colors and we'll do our best to meet that specified color.  If requested, we would be happy to print a sample for a small cost.
We create our files in the vector based program Adobe Illustrator at 10% scale.  
You will get the best results if you produce your file as follows, this includes photography.
100% scale at 100dpi
50% scale at 200dpi
25% scale at 300dpi
10% scale at 600dpi
Make sure raster effects are set to a matching dpi and layers are flattened.
No bleeds or crop marks or layers...or anything unless we are doing a vehicle wrap or something a bit more complex, and that's another story.

All fonts and strokes are converted to outlines.

Save as a .pdf or .eps.

Now, if that's not working for you, we would be more than happy to design your product.