Qingzhou North Hydraulic Technology Co., Ltd. optimizes the product design according to the non-excavation horizontal directional drilling rig operating environment adopts double seal form, drilling rig hydraulic pump hydraulic motor products are oil-resistant, impact-resistant, rotational push-pull torque, can work reliably for a long time, our products are purchased and used by the majority of drilling rig equipment manufacturers for a long time, for horizontal directional drilling rigs, downhole drilling rigs, water well drilling rigs, tunnel drilling rigs, etc.