Nowadays,the stage is made of aluminum usually.Why no people use the iron or other materials?There are 3 reasons following.
First,aluminum is rust-proof.We all know that some shows are outdoor.If it is raining, the metal is esay rusting expect thealuminum.Second,aluminum is light.The stage is more light,the stage is more safety.Because the stage can't hold a very heavy weight.Besides,a light stage is easy to transport and assemble.The last reason is that the aluminum is cheaper than other materials.The material is cheaper,the less money you spend.
Aluminum stage
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