YHZM VS YHZS mobile concrete batch plant The difference between these two series is the chosen concrete mixer. The YHZM series choose drum concrete mixer while the YHZS series concrete plant choose twin shaft concrete mixer. The twin shaft concrete mixer has a relatively higher efficiency and wider applications. Specification of mobile concrete batch plant for sale Productivity: 25m3/h Concrete Mixer:J ZM500 drum mixer Batching machine: PLD800 Cycle time: 1.5 minutes Control system: Automatic