Our products are the X particles made from tungsten powder, under the theoretical guidance of R. M. German, a famous powder metallurgy scholar in University of Pennsylvania, and by combing the practices of our company. The basic procedures are as follows: 1) Select and prescribe high quality tungsten powder 2) Mix the powder with appropriate amount of cementing agents 3) To make the mixture into particles 4) To inject the materials into the sealed model to make the model 5) To pull off the cementing agents in the model 6) To make the model condensed through high temperature sintering 7) To make it more condensed through treatment after sintering 8) To process into finished product through the laser cutting CNC and other high precision machinery