Advantages: 1, can process special materials. Material powder metallurgy can be used to manufacture refractory metals, compounds, pseudoalloys and porous materials. 2. Save metal and reduce cost. Because powder metallurgy can be pressed into compact with final size, there is no need to use mechanical processing. The metal loss produced by this method is only 1-5%, while ordinary processing will consume 80% of the metal. 3, preparing high-purity materials. Powder metallurgy technology does not melt materials in the process of material production, so it will not be mixed with impurities brought by other substances, and sintering is carried out in vacuum and reducing atmosphere, which is not afraid of oxidation and will not pollute materials.