... . Popular with Mid East , Africa and Aisa sand making production line which is high-functioned equipment for making sand and shaping ... , hydroelectric power, high-class highway, high-speed railway, passenger special line, bridge, airport pavement, municipal works and high-rise buildings. 3 ... 8%.5. It is suitable to crush medium hard and ultra-hard materials. 6. Working noise is lower than 75 decibel ...