Do you have a board on the back of an aluminum - plastic panel for exterior decoration and advertising
What materials can control a few months it. A long time, what materials will be bad.
With a triangular iron welding frame, outsourcing light box cloth on it.
So do not have to consider the aluminum-plastic plate, because the cheap aluminum plate is certainly more expensive than wood
You can be other materials, do billboards, the purpose is to save some money!
