The word MUPI is from French ,short for mobilier urbain pour l'information.
It means outdoor information panel used for advertising or public information. It's a type of outdoor poster that you usually find on the street beside a bus stop.
To select a good mupi , the following are the most important:
Frame Material , stainless steel or aluminium is the most common ones, but there are tips for the thickness that buyer should consider.
LED Lighting , T5 light is old thing from last decades , though worst LED is better than Fluorescent Light considering the lifetime and maintaince , still RA and lumens depreciation are the ways to select good lighting.