Hinge of Notebook (For LCD 17) Character: 1.Action angle from 0 to 180 degree. 2.General structure. 3.Torque decline under 15% for open and close continuously from 5 to 170 degree life test (over 20000 times and speed at 6 times/min) 4.No deformation for 24 hours shaking test at frequency 5 to 30 Hz. 5.No deformation for dropping from 3 meter height. 6.Hinge torque decline under 7% for long-term testing.