What type of printing do they use for printing signboard?

I saw a signboard recently of the Queen East centre: http://www.newstylesigns.com/gallery/digital-print-vinyl-signs/ which caught my eye. The print looked like vinyl to the naked eye and could be viewed from a distance. I would like to get a similar board done for my store as well. Are there better boards out there ?

 

You can get a variety of cheap sign materials, most commonly are coroplast, rigid PVC and aluminum. I prefer rigid PVC anyhow, professional look sign surface and ideal choice for medium life signage.