The new product was invented by Silvery Dragon in 1991, and the research program of the product includes spiral drawing die, spiral deforming technique etc. 12 proprietary technologies. The product is characteristic of 3 to 6 spiral ribs through spiral deforming drawing on the surface of wire, increasing the bond ability with concrete and raising PC products properties. Since 1997, spiral rib PC wire has already fully took place of indented PC wire, and it has been applied in PC telegraph pole, PC hollow floor plate, PC sleeper, high-speed railway PC sleeper plate, PC water supply pipe etc. Since 1996, it has already been exported to the overseas market. In 2006, the product passed the examination and certificate on the properties by German TU Munich; now the product is applied by Great Britain, Ireland, Bangladesh, German, Poland, etc. more than 30 countries. The production of the product is according to Chinese GB/T5223-2002. Except the shape, other standards for mechanical properties are interchangeable with those popular in the world, or we can use the reasonable standard after consulting with customers.