... 3.Charging volume:6000L YJS4000 Twin-shaft Cement Mixer with automatic control on sale Technical features of YJS series twin- ... reducer, log service life, lower noise;DISCHARGING SYSTEM: Hydraulic discharging system, with strong drive force and reliable discharging, can open ... to the Commercial Ready Mix Concrete Plant, working with PLD series of Aggregate Batching Machine.YJS 4000 Hydraulic ...