Through many years of accumulated experience and data, we have unified the Strength, Safety rate, and Life-length Level, raised the Additional Rate to another level, and organically sublimated new equipments. Therefore, we have not only practically increased the performance by 1-2 classes, but have managed to develop more compact lighter Mixers. In practice, high levels of performance and handling, and also the simplicity of the repairs and service of our Mixers are clearly evident. These are the Medium Speed Mixer Series M-3 and M-4, which meets the necessities of the vast Industrial world.