This Model Is Designed Mainly For The Fine Powder Which Easily To Spout Dust And High-Accuracy Packing Requirement. Based On The Feedback Sign Given By Below Weight Sensor, This Machine Do Measuring, Two-Filling , And Up-Down Work ,Etc. It Is Specially Suitable For Filling Additives, Carbon Powder, Dry Powder Of Fire Extinguisher, And Other Fine Powder Which Needs High Packing Accuracy.