- 94mm PDC Bit
- 2017-01-14 19:50
- 1.Diamond micron powder from Germany. 2.Hard alloy from Japan 3.Testing procedures is according to ASTM's standard
- PDC1916 H
- 2017-01-14 19:50
- 1.PDC accord with IADC and ASTM's standard 2.Diamond micron powder from Germany. 3.Use 80-100 mirconDiamond power