It can effectively delay prehardening, avoid stratification and eduction, and ensure construction quality and speed. This series of concrete mixer truck can be divided into various models, such as 7 to 16cbm, which can be matched with any special domestic and foreign chassis according to the choices of our customers. The driving system of the mixing drum adopts the closed-type hydraulic systm pump, motor and reducer which are imported from the US and Germany with original package. The necessary hydraulic accessories such as the oil tank, radiator filter and rubber hose connector are all imported parts. All of this ensure the hydraulic system a long service life.