Railway accessories are part of the railway line, and the track referred to here includes many components. As a whole engineering structure, the track is laid on the subgrade, which plays a guiding role in train operation and directly bears the huge pressure of locomotive vehicles and their loads. Under the power of train operation, its various components must have sufficient strength and stability to ensure that the train runs safely, smoothly and uninterrupted at the prescribed high speed. In the annual vehicle procurement of the Ministry of Railways, in addition to the new vehicle demand for additional mileage, it also includes a large part of the demand for vehicle replacement. Railway accessories have developed rapidly over the years. In the context of railway accessories speeding up and heavy loads, in order to achieve the goal of heavy loads of hundreds of kilometers per hour or tens of tons or more, it must be equipped with high-speed, heavy-duty, safe and reliable high-quality Railway parts, which will directly accelerate the demand for high-tech vehicle parts, and there will be a lot of room for development of new-generation products and technologies. Since the launch of the railway leapfrog development plan eight years ago, China ’s railway construction investment has increased significantly. Seven years ago, investment in railway infrastructure and investment in the purchase of locomotives doubled compared to five years ago. Six years ago, the national investment in railway fixed assets reached more than two hundred billion yuan. More related products fish plate, spring bar.