Descripción del producto

1.Adopting double-spring design, opening lightly and closing smoothly, prolonging service life.� ***** pressure reducing value: Using to prevent the destruction of the floor spring or oil�Leakage on occasions that the door is closed by strong pressure or wind force.� ***** design, suitable for left or right hand to open the door in single and both sides.� 4.Use low temperature frostbite hydraulic oil, ensuring the normal door-closing speed when the�Temperature is forty degree below zero degree.� ***** cement container, 6mm adjustable in length, 5mm in width and *0mm in length, which is convient�For assembling.� 6.Super thin designed, enable it convenient to installed in district with special demands.