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30m Durable High Efficiency Hydraulic Rotary Drilling Drill Rig for Deep Foundation Borehole Pile Construction Works, Find Details and Price about Rotary Drilling Rig Multi-Soil Layer Rig from 30m Durable High Efficiency Hydraulic Rotary Drilling Drill Rig for Deep Foundation Borehole Pile Construction Works - Puyang Yuwei Machinery Co., Ltd.