... been widely used in food, chemicals, building materials, metallurgy, electric power and other industrial processes bulk solid ... 402. Dust-proof structure3. Powder, granular and lump materials can all appliance4. Accuracy better than 1%5.A ... the 500m The Materials can be measured1. Powder (plastic raw materials, iron powder, sodium sulfate, cement, vitamins, cocoa, alumina, iron ore powder, blue copper ...