1. Simple structures, 2. Easy operation; 3.Explosion Proof; 4. Very long serviceable life etc.. 5. Easy aftesales service. ... buildings, channels, shear Walls, retaining Walls, bridge retrofits, architectural concrete, mining, tunnel, culvert, subway, hydropower engineering(such as tunnels, dams and ... x H):1520 x 820 x 1180(mm) Hottest Sales Explosion proof shotcrete spray machine