According to Sina Finance News, Donggang shares (002117.SZ) responded to investors' questions about whether the subsidiary blockchain project is true. The company's wholly-owned subsidiary Beijing Donggang Jiahua Security Information Technology Co., Ltd. The four blockchain service projects completed the blockchain information service filing. The completion of the blockchain application project registration is conducive to the promotion and application of our company's electronic bills, electronic invoices, electronic licenses and related management systems, which can promote the better development of blockchain application projects, but will not affect the company's overall operation. The improvement in performance has a significant impact.