Drill Type: impregnated diamond bits, diamond drill table, alloy drill 
The use of impregnated diamond bit the widest range, is the most commonly used in mining exploration industry, the drill bit. Internal use of such bit of an embryo is carefully selected high-quality diamond, continuous wear and tear in the matrix, while there have been a new diamond blade to keep the drill speed drilling. 
Natural diamond head table recommended for use mainly Inlaid head not good, soft, grinding, loose formation. Also recommended for use due to equipment limitations Inlaid head speed and load are below standard drilling hard rock. Day table full face is not broken ground for the core drill. Matrix using artificial, natural or polycrystalline diamond, for soft to medium hard formations. 
Alloy carbide drill bits to use as a cutting medium. Carbide does not have the hardness of diamond, as the limited scope of application of core drill bits, but when drilling soft formations is a very economical choice. 
If you have interests,don't hesitate to contact me,thanks. 
Mia 
drillbits13 at zkdrilling dot com 
MSN:mia2014567at outlook dot com 
Skype:drillbits007