zLJ-250 mine tunnel drilling, exploring water drilling rig 250, ZLJ-250 anti-sudden rig, ZLJ-250 hydraulic drilling rig exploring water 200 meters ZLJ-250 tunnel drilling rig Histon of each product through the layers of quality control, all passed ISO9001 quality system certification, with no blemishes factory! You can see the device embodies Histon all wisdom and hard-working person, every drop of sweat only do better for. Whether the product is good, only the user's voice the most real, Histon years widely around the users. So that the quality is better, so that better service, but also what we are thinking and are doing! ZLJ-250 hydraulic drilling rig exploring water technical parameters of the output torque of 250 N / m using a drill φ33.5 / 42 drilling diameter 89φ drilling depth 200M rated thrust 9KN to Histon never let you expensive, just to let you bought, the money can not be so headstrong, you say it. Good cheap quality, the company over the years always adhere to high standards of service to the industry leader's identity themselves, continuous improvement and breakthroughs, committed to the development and better equipment.