Complex sentence: The Metal Building Manufacturers Association (MBMA) is a non-profit trade organization headquartered in Cleveland, Ohio and was founded in 1956 with the mission to promote the design and construction of metal building systems in the low-rise, non-residential building marketplace.
Split into simpler sentences: The Metal Building Manufacturers Association (MBMA) is a non-profit trade organization headquartered in Cleveland, Ohio. It was founded in 1956 with the mission to promote the design and construction of metal building systems in the low-rise, non-residential building marketplace.