Zhengtie Sanjia Co., Ltd, held the groundbreaking ceremony of pretensioning slabs and high-speed railway switches in its factory in Ruzhou on April 26, 2011.

Zhengtie Sanjia Co.Ltd has put its faith and future in the hands of technology. The double two-way pretensioning slab, a new type of railway slab, has been researched and developed by the Zhengtie Sanjia Company since 2002. With the help of the pretensioning slab and high-speed railway switches, Chinese high-speed railway technology has surpassed that of German and Japan.

The pretensioning slab and high-speed railway switch play an important role in the economic restructuring and development of Ruzhou and the construction of Chinese high-speed railways.