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The name of the high-speed sound barrier project is spz-1 spz-2.
Engineering case in detail: the overall height is 3.5 high noise barrier, is divided into three parts, part 1.1 meters tall on the metal shutters sound-absorbing barrier, middle and lower part, 1.2 meters tall choi steel, noise barrier were used respectively to look at the top of the micro arc, broadly spraying pale gray, integral colour clean and neat, add a bright beautiful scenery to high speed. This type of combined high speed sound barrier is very popular because of its good sound-absorbing effect.