... one lock (ignition switch, door and fuel tank);Mixer 1,Mixer uses double helical blade, moderate density, the ... better durability. 3,Mixing tube angle is low, the hydraulic pumps, motors, gear life extension, Vice square tube ... and the spiral pitch, to achieve uniform mixing of concrete Tianjin Jinxinsheng Import & Export Trading Co., Ltd. ... Email: ronniewang@ aiet.com.cn 12m3 HOWO concrete mixer truck