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| Hejian Feizuan Petroleum Supplies Co., Ltd. [Country: China] | Established in 1985, Hejian Feizuan Petroleum Supplies Co., Ltd. Is a scientific research. Production and sales joint- stock enterprise.It consists of Feizuan cone drill bit plant,Feizuan PDC drill bit... Main Products: used pdc bits, used TCI bitsView Website | | | Hejian Huanyu Petroleum Machinery Co., Ltd. [Country: China] | Hejian Huanyu Petroleum Machinery Co., Ltd. Was established in 1998,located in Hejian which is in the middle of Cangzhou city,and enjoys good location and convenient transportation.Huanyu specializes... Main Products: used PDC bits, used tricone bitsView Website | |
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