... GB, ASTM... ISO9000; 2), Exquisite surface; 3), Steady structure; 4), Low cost, high benefit. Tensile membrane structure building Unique Features1.Mechanical Properties2.Self ... span6.Acoustic performance7.Insulation performanceComply with GB, ASTM,....ISO9000; Exquisite surface; Steady structure; Low cost, high benefit. Excellent design teamStrict quality control ...