... Low surplus rate (4)Long life etc. Concrete mixer truck’s brief introductionHONGDA serial concrete mixer trucks are SHANDONG HONGDA GROUP’s independently developed ... eduction,and ensures construction quality and speed. HONGDA serial concrete mixer trucks include many models such as 8m³,9m³,10m³,12m ... slewing, speedy discharge,low surplus rate,handy operation,and long using life. Concrete mixer truck