A: In normal, in the market there is 4 kinds of concrete mixer
--Twin-shaft concrete mixer
--Planetary concrete mixer
-- Self-falling drum type mixer
Now for the batching plant matched, the twin-shaft mixer and planetary mixer is more popular. In the same time, twin-shaft mixer is usually for the ready mixed concrete; the planetary mixer is major in the precast concrete and concrete brick.
Drum mixer and pan mixer is for the smaller projects by manual, no high quality requests of concrete.