Ring binder mechanisms are ideal for loose leaf files, folders, portfolios and a wide array of other filing products. They are easy to open by hand or a booster. Ring binder mechanisms are available in a variety of shapes, including a round R shape, D-shape, and STD shape for customers to choose from according to their file binding needs. Specifications meet international standards, though custom options are available upon request.
Surface treatment: electroplating, electrophoresis, dusting（silver, black, bronze, rose gold and custom colors)
Customization options: ring shape (R, D, Q, and SD), size, surface treatment, and design
The pull open binder mechanism is opened and closed by hand, and available shapes include an R, Q, D, or SD shape.
With the trigger binder mechanism, rings are opened and closed with a booster, the type of the booster can be trapezoid booster and inclined booster. The binder mechanism are available with different shapes as round R-shape rings, D-shape rings, inclined D-Shape.