DTH Drill Bit, Dhd340,Cop44, Cop42, Ql 40, Sd 4, Mission 40Xiamen Qicheng Superhard Material Co., Ltd.China
DTH Bit, Dhd 3.5, Cop 34, Cop 32, Mission 30, Br 3, Ql3Xiamen Qicheng Superhard Material Co., Ltd.China
Dhd 360/ Cop 64, Cop 62, Ql 60, Sd 6, Mission 60,DTH BitXiamen Qicheng Superhard Material Co., Ltd.China