Cangzhou Great PDC Drill bits Co., ltd specializes in designing, manufacturing, marketing and serving the high performance diamond bits and drilling tools used in petroleum industry .The co***ny is established by the top experts of the field , and equipped with advanced equipments and facilities .
Our diamond bits named Great , which ranging from 3"to 17-1/2",All the products have been awarded the ISO9001 certificate .
Furthermore , the experienced and knowledgeable service team will ensure all the su...
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