Architectural advantage of steel structure/rack is what?

A:

Light steel structure/rack construction quality, high strength, large span.

Low steel structure/rack construction period is short, reduce investment cost accordingly.

Steel structure/rack high building fire retardancy, anticorrosive.

Steel structure/rack construction move convenient, recovery of no pollution, environmental protection is good.

Steel structure/rack construction investment is low, low economic benefits.

Low steel structure/rack the beauty is generous.