1. doubel z-arm, rotation with different speed 2.mechanical seal, no oil ... the pharmaceutical, chemical, foodstuff industries, etc.Working Principle: The double Z-shaped oars stir to make the material to-and-fro ... -2002000.4-0.8455.51.1950SCH-4004000.4-0.845112.21300SCH-6006000.4-0.8451531900SCH-8008000.4-0.64518.532100 ARM MIXER & Z-ARM BLENDER ...