Gelonghui, April 19 | Weiao Co., Ltd. (605001.SH) said on the interactive platform that the company participated in the design and manufacture of CR450 prototype products. Currently, some products have entered the detailed design stage and have begun manufacturing, testing and verification of product prototypes simultaneously. The application of carbon fiber composites is jointly developed by the company's R&D center and Romevio, a wholly-owned subsidiary that produces rail transit composite parts. The subsidiary Weiao Automotive Technology (Tangshan) Co., Ltd.'s main business area is automotive composite-related business, and it has not participated in the CR450 technology innovation project.