... :2'',2.5'' Zhengzhou Wet mix concrete spraying machine Applications:1. Concrete machine for tunnels,hydro-power engineering,mines,underground engineering, civil ... slope stabilization,etc.2. Atificial soil seeding for no soil surface, such as rock, sand, and for no fertility soil ... Motor 7. Main Motor 8. Housing 9. Hand wheel speed 10. Speed display 11. Transmission 12. Pressure Gauge 13. Add quick ...