JS500 concrete mixer can mix the plastic and half-dry hard concrete,fluid concrete and light aggregate concrete. It is applicable to the common construction working site, road, bridge and each kind of precast product factory. It can work independently or be used as facility concrete plant, which is applied with correspond batching machine. JS500 has manul or Hydraulic pressure discharge mode. It has reasonable instructure,high production efficiency,drive, reposefully and low noise .The electrical system adopts import component, which is good performance and reliability.