Surface set with high-quality nature and polycrystalline diamond, good-design impregnated with optimum parameters
DIAMOND BITS AND REAMING SHELLS (CHINESE STANDARD)
Double-tube Core Bit
and reaming shell36, 46, 56, 59, 60,
66, 75, 91, 110, 130Single-tube Core Bit
...
Products: filigree diamond rings,
diamond cuff link