We are Hebei Zhankui Drilling Equipment Co., Ltd in China, We are the supplier of tricone bits and PDC bits in China, we can design and produce PDC 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 drag bits, bit cones, mining bits, drill pipe, drill c