济源市东方重工有限责任公司
Exhibit Profile：
Non-magnetic drill collars, non-magnetic weighted drill pipes, non-magnetic pressure drill pipes, ordinary drill collars, weighted drill pipes, non-magnetic stub joints, directional joints
Non-magnetic drill collars, non-magnetic weighted drill pipes, non-magnetic pressure drill pipes, ordinary drill collars, weighted drill pipes, non-magnetic stub joints, directional joints
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