Posters for exhibitors are usually written out on a photocopier rather than printed right? Otherwise the other costs such as film would be very high right?

That's right, it's the airbrush that sprays out the posters, which can be film (easy to carry and transport) and can also be laminated with KD boards, and it's inexpensive, there is no quantity requirement because most exhibitors use it once, so it's the most cost-effective way of writing and printing out the posters.

Paper prints, not only because there are out of film prices, but also printing, cutting and other processes, long cycle, waste, unless you do a lot of posters for publicity. Quarto four-point Tianjin price of a set of film 60 yuan , airbrush portrait price of 25-27 yuan per square meter.