The modified diamond powder (AMP Series) and the characteristics of the technology for self development of our company, covering chemical substances through the surface of the diamond powder particles, in order to achieve the change of the particle surface activity; reduce the powder particles in the as free abrasive polishing, because the surface energy and other factors, two the reunion and other issues, can give full play to the effectiveness of single grinding particles; the products are divided into hydrophilic and oleophilic type two kinds, to match the process of different operating environment and technical requirements. Application of modified diamond powder, the product can be used for direct preparation simple polishing liquid used; used as free abrasive polishing work environment in the ordinary diamond powder, modified diamond powder can be used as a better alternative to the use of abrasive.