As the largest PDC bits and tricone bits repair center in China, Oilman Petroleum Geology Driling Equippment Company Limited is capable to repair and maintain various types of PDC bits and tricone bits used in oil drilling and mining industry. Currently, we can supply high quality rebuilt (80%-90% new) PDC bits and tricone bits worldwide. Thanks to the fast growing of our business, we want to buy used PDC bits and tricone bits (tricone bits) in all sizes in large quantity. If your esteemed company has any stock or has any channel to supply these used bits, and has the interest to establish business connections with us, feel free to contact us for further discussions.