Diamond core bits are widely used in the fields of geological exploration, engineering-oriented, hydroelectric and building engineering. Diamond drill bit series include the bits of different structures (Single tube bit, Double tube bit and wire line coring bit, etc.) and of various bit standards (domestic and foreign standards.). Diamond reaming shell is used together with diamond drill bits, maintaining the hole size and improving drilling stability. Forsun can provide electroplated diamond reaming shell and polycrystalline reaming shell.