Renovation of large outdoor anti-aircraft gun billboards

I can tell you that it is not necessary, because when making anti-aircraft artillery, the safety of changing the screen in the future was taken into consideration. Our company specializes in making anti-aircraft artillery billboards. Of course, some guerrilla construction teams would not consider these issues, but it should be possible to change the screen, but it would be inconvenient and highly dangerous. I don’t know where you are from, but if you are near us, we can give you free guidance.