1.Concrete spraying machine 2.20 years experiences 3.Exported to India 4.6m3/h,2100X900X1200mm,150kg 5.Inner size:2'',2.5'' Zhengzhou Wet mix concrete spraying machine Applications:1. Concrete machine for tunnels,hydro-power engineering,mines,underground engineering, civil engineering and slope stabilization,etc.2. Atificial soil seeding for no soil surface, such as rock, sand, and for no ...