... , metallurgy, electric power and other industrial processes bulk solid materials in a variety of measurement and quantitative control of4 ... temperature down to -402. Dust-proof structure3. Powder, granular and lump materials can all appliance4. Accuracy better than 1 ... , coal, carbon black, potassium cyanate, flour, etc.),2. Granular (a variety of cereals, salt, all kinds of fertilizers, beverages ...