It is specially designed and manufactured for powder, superfine powder and other materials. This function can complete the measurement, filling, nitrogen filling and other work, through the servo motor to drive screw rotation, to measure the purpose of filling materials. It can be matched with various bag making and packing machines, and can be used to measure filling powder material. It is suitable for packing milk powder, rice flour, nutritious food, solid drink, food additive, monosodium glutamate, condiment, glucose, dyestuff, essence, spice and other materials.