Silvery Dragon is a global producer of a full range of prestressed steel products with a large production capacity. It has independent innovation capabilities and an excellent management team. It has five prestressed steel production bases and annual production capacity of more than 600,000 tons. Silvery Dragon is one of the main R & D units of CRTSIII high-speed rail track slabs with international leading level, and has continuously developed a series of two-way pre-tensioned pre-stressed concrete products, such as subway track slabs, subway floating slabs, crossing slabs and subway seismic belt track slabs; At the same time, successfully developed high-speed rail track board intelligent production equipment and rail transportation information technology series and products.