Zhankui Drill Equipment Company has 20 years experience in bits service and drill accessories supply . We are the trustworthy supplier of tricone bits and PDC bits in China estabilish in 1980,we can design and produce PDC bits & drag bits for you and we are the agent of tricone bits,we have built further cooperation with KINGDREAM,LILIN,CS and other big factories in China,please be assured that we can supply you the same good quality with better prices. We can also supply drill pipe,drill collar, DTH hammer bits, fishing tools, stabilizer, casing centralizer, float shoe&float collar,slips, safety clamps,hammer union,mud pump,hole opener,die collar and fishing tap and some other drill equipments with better prices. Now we have some new Lilin bits and kingdream bits in store,if you have any needs about new or used PDC bits and tricone bits or any drill equipments,please don't hesitate to contact me,thanks.