... 4, 6, 9 3.For CNG station High Pressure CNG Cascade Container for Gas Station: Specification: 1x3, 2x2, 2x3 ... , 3x3Working pressure: 25MPaGeometric capacity(M^3): 3.39, 3.90, 4.52, 5.20 ... , 6640x668x2158, 6640x1335x1494, 6640x1335x2158, 7350x668x2158,7350x1335x1494, 7350x1335x2158, 4900x2000x2158 High Pressure CNG Cascade Container for Gas Station