If you're trying to lift something heavy, a jack can be incredibly useful, if not necessary, but do you need a screw jack or ...

Some of them will even work with ATVs or UTVs, or trailers. However, a quality, fast-action hydraulic floor jack isn’t always the easiest thing to move around. For more portable units you may want to ...

The automatic vertical drilling system (VDS) adopts downhole closed-loop control, through ground monitoring, a large closed-loop control on the ground and downhole is formed to keep the wellbore in a ...