Drill Bit - tricone or PDC

We manufacture and provide all sizes of drill bit,including tricone bit and PDC bit.
If you are interested in cooperation with us,please contact me.My email: stevenpan(dot)ps(at)gmail(dot)com or admin(at)ldpetro(dot)com.If my email address does not show here,please search and visit our website www(dot)ldpetro(dot)com,and find my email address in CONTACT US.