A JS1500 concrete mixer machine is also called 1.5m3 double horizontal shaft compulsive concrete mixer, because it has twin mixing shafts inside the mixing drum. Both shafts works in a compulsory way to realize high efficient mixing of raw materials. The mixer features in low energy consumption, small noise, simple operation, convenient maintenance and long service life, widely used in production of plastic, rigid, light concrete and various mortars. It can be used alone or as the mixing host for concrete batching plants of middle scale. A lift serves to deliver raw materials into the mixer machine.