CANGZHOU GREAT DRILL BITS CO.LTD
GREAT is a leading supplier of premium drilling products and services to the worldwide Oil and Gas Industry.We specialize in designing, manufacturing and marketing of various high quality diamond drill bits for various petroleum drilling activities. Products series classified by cutting elements covers PDC bits, TSP bits, Natural diamond bits, impregnated diamond bits. Product series classified by purpose covers diamond drill bits, coring bits, bi-center bits and reaming tools while drilling. Size of various bits and special tools covers from 3 ... more >
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