We sell on a worldwide basis drilling core machine. Portable Core Drill is a shallow sampling drilling system. Different accessories for your choosing with different demands. With strong power, low loss but high speed sampling, Portable Core Drill has met with great favor in varies application fields at home and abroad. Core Drilling machines can be used in different fields ,such as Geological Survey,Regional Geological Mapping,OilExploration,Minelode Exploration,Paleomagnetic Sampling ,Tunn