Hebei Zhankui Drilling Equipment Co., Ltd

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8-1/2”x4”GDC0806 core bit8-1/2”x4”GDC0806 core bit (8-1/2”x4”GDC0806)

17-1/2”G1905PDC bits17-1/2”G1905PDC bits (17-1/2”G1905)

8-1/2”x4”GIC279 core bit8-1/2”x4”GIC279 core bit (8-1/2”x4”GIC279)

12-1/4”GD1307PDC bits12-1/4”GD1307PDC bits (12-1/4”GD1307)

8-1/2” G 1905 PDC bits8-1/2” G 1905 PDC bits (8-1/2” G 1905)

9-1/2” GD1307 PDC bits9-1/2” GD1307 PDC bits (9-1/2” GD1307)

6” GD1305 PDC bits6” GD1305 PDC bits (6” GD1305)

8-1/2” GD1608 PDC bit8-1/2” GD1608 PDC bit (8-1/2” GD1608)

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