At present, the technical index of P / M products is 7.2g/cm3, and the parts with simple structure can reach 7.3g/cm3. Since 2017, we have cooperated with Central South University in Taishan leading talent project, and the expected technical index is 7.5g/cm3, and the cost increase is not obvious. At present, the two sides are cooperating in research and development. If the product density can reach 7.6g/cm3, it can replace steel products.