... , HQ rod, AW rod, BW rod and casing2. Diamond core bits for exploration mining and dam drilling grouting; (They are the ... , T6 146...)4. Casing shoes bits; (AW, BW, NW, HW, PW)5. DTH bits and the hammers6. Noncoring bits (natural diamonds, synthetic diamonds ... and natural+synthetic diamonds)7. Natural diamonds core bits, synthetic diamonds core bits, PDC bits;8. Drilling rods;9. Core barrels;10. Core ...