On March 4, Changyou Technology, an investment company backed by Qingyu Fund IV—managed by Yuanhe BingSheng and previously invested in by Yuanhe Chenkun's funds—officially listed on the ChiNext Board, with stock code: 301557.SZ.

Changyou Technology was established in 2006 and is a company dedicated to the research, development, production, and sales of polymer composite products and lightweight sandwich materials. It has earned recognition as a national-level "Specialized, Fine, and New" enterprise. "Little Giant" enterprises and high-tech companies. The company’s product line includes wind turbine nacelle housings, lightweight composite materials for wind power applications, nacelle molds, as well as components for rail transit vehicles.

The company’s wind turbine nacelle housings and lightweight sandwich material products—among other offerings—are widely used in the wind energy sector, serving as critical components of wind turbines. These nacelle housing products ensure the stable and safe operation of wind generators, while the lightweight sandwich materials enhance the blades' ability to withstand heavy loads, significantly reducing the risk of blade failure.

In recent years, Changyou Technology has been deeply engaged in the wind power sector and has actively expanded its diversified related strategies. The company has extended the application of polymer composite materials to the manufacturing of rail transit vehicle components, which not only reduces vehicle weight but also significantly improves performance indicators such as corrosion resistance, antioxidant properties, flame retardancy, and sound insulation of the carriage. The market prospects are broad. The company’s main products in this field include interior and exterior decorative parts for rail transit vehicles. Currently, the company has established a solid cooperative relationship with CRRC, and its products have been applied to numerous rail transit vehicle projects both domestically and internationally.