... 3,high efficiency 4,no pollution 5,mixing well Features:1, Both mixing pail and vane are made of Stainless ... steel.2,Helical circular mixing device, fast and equal stirring.3,Materials in the ... can be completely stirred by swirl type, a shorter mixing time.4, Overload protection device for motor and multi ... range of 0 - 15 minutes Specification: Vertical Powder Mixing Machine