Detailed Product Description Features:1) Sizes: 150um (-100Mesh), 75um (-200Mesh), 45um (-325Mesh) or 38um (-400Mesh), screening residues ≥3%2) Properties: boll shape and likely boll shape, silvery gray powder.3) Usage: used in power metallurgy, electrical carbon product, attrition materials, soldering paste, reducer and electrical industryPacking:White plastics barrel, 40kg/barrel