Xiangtan Yongda Machinery Manufacturing Co., Ltd. principally engages in the design, development, production, and sale of metal structural parts for large special equipment. Its key products include tunnel boring equipment and supporting products, such as shield bodies, cutterhead bodies, segment machines, and tunnel wall support segments of shield machines; engineering lifting equipment products, such as frames, jibs, and tower crane structural parts; as well as wind power equipment products, such as wind turbine nacelle bases, frames, rotor brackets, stator brackets, and locking discs. The company was founded by Pei Liang Shen on July 4, 2005 and is headquartered in Xiangtan, China.