1. The diamond powder is selected in a higher degree.
2. The claws of the interface are changed to be net-grooves-shaped which formed by 20 straight vertical grooves, and the depth of the grooves are shallower.
3. Improved the interior structure of the sintering cell that makes the pressure and temperature to be more uniform. It is very important for the PDC sintering.
4. Using new super heat-resistant metal, to avoid being contaminative during sintering.
5. The sintering processing is amended, and the bonding strength of the diamond-diamond key among the diamond layer is improved
6. Increase the content of diamond, and increase the thickness of diamond layer up to 2.0mm.