High quality sliding door hardware products are mainly reflected in the design and manufacturing level of its pulley system, as well as the matching track design. Bearings used in the manufacture of pulleys must be multi-layer composite bearings, the outermost layer must be high-strength wear-resistant nylon bushings, and the surface of nylon must be very smooth and can not have prismatic protrusions; the inner ball bracket is also a high-strength nylon structure, reducing friction and enhancing the lubrication performance of the bearings; the bearing layers are all steel structures, this design can effectively reduce the noise during pulley sliding process, and can {TodayHot} make the pulley care, enjoy light lubrication for at least ten years. The track matching with the pulley is also very important for the use of sliding door, the track used for sliding door generally has cold rolled steel track and aluminum alloy track. Consumers may generally think that the rail is stronger and more durable than the aluminum alloy track, the thicker the wall thickness of the track, the better, actually not quite. The high quality sliding door hardware is embodied in the perfect combination of track and pulley, rather than a simple part. The track must have a perfect radian fit with the pulley, followed by the material problem. Generally speaking, imported materials should be better than domestic materials. Consumers should know that it is not difficult for any product to make the same shape, but it is difficult to look like it. Any consumer wants the sliding door hardware they buy to be used for a long time without failure, so high-quality sliding door hardware manufacturers must also consider the steel plate ratio of the manufacturing rail and the alloy ratio of the aluminum alloy track, so consumers should not pay one-sided attention to the thickness of the track. In the selection of rail and aluminum alloy track, consumers should not one-sided think that rail must be better than aluminum alloy track, good track depends on the strength design of track and the finish of contact surface with pulley in track, and good aluminum alloy track is better than rail in noise resistance. In addition, consumers should not be confused by the packaging of the product or the coating on the aluminum alloy surface, unreasonable coating can only destroy the surface finish of the track, so do not think that the deeper the color of the coating on the track surface is better, it is likely to be the opposite; and the packaging of the product is only due to its temporary use effect, does not have to bear the extra high packaging cost for the manufacturer.