http://www.kbjzpdcbit.com/PDC Cutter Company Profile Hunan Kuangbao Precision Drilling Machinery Co., Ltd.(KBJZ) ,which was established in 2010 and located in Xiangtan City ,China, is a professional manufacturer that develops, produces and sells drill bits, drilling rigs and drilling tools.Our products include PDC bits, PDC coring bits, impregnated diamond core bit, casing shoes,, DTH bits, tricone bits, reaming shells, drill pipes, water well drilling rigs, etc. and are widely used in oil well drilling , water well drilling , natural gas exploitation , geological exploration , construction engineering , coal mine , mining ,quarry m
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