... lay Material :steel Finish: NP, AB,AC Hydraulic hingeName: hydraulic hinge Type: half over lay, full over lay, small over layMaterial : ... AB,ACNickel Plated :NPAntique Brass: ABAntique Copper: AC 1. hydraulic hinge have passed 48hours salt spray test2. passed 50,000 open ... manufacturer of door handle, door stop, door bolt, door hinge furniture hardware and other hardware accessories etc. There are at ...