product details (1) uses: powder metallurgy, diamond catalyst, electronic components, injection molding, superhard materials, binder, microwave absorbing materials, cemented carbide, superhard materials, and high-end hardware tools. (2) the product has onion like or spherical particles under the electron microscope, with high purity and high activity. (3) sex, high fluidity, easy to be pressed, easy to sinter, and other advantages. (4) common specifications: 1-3μm，3-5μm， 5-8μm