Specialized in manufacturing
Hunan lieyan technology co., ltd. is a high-tech enterprise integrating high-end precision manufacturing, new material research and development, and hydraulic technology application.Specializing in the production of hydraulic drill, hydraulic power head a
NEWS & EVENTS
What causes the failure of drilling rig to walk?
Excavation drilling rig is a new kind of hydraulic drilling rig in recent years. Its failure perfor-mance has many performances. The reasons and inspection methods for the weakness of drilling arm have been introduced before. It is also a more difficult p