[2-connected board Dingxin Communications: The power business failed to win the first batch of bids for the State Grid in 2026] On September 10, Dingxin Communications (603421.SH) disclosed abnormal stock trading fluctuations and announced that the company focuses on the research and development, production and sales of power line carrier communications and smart grid equipment. The core business revolves around "smart meter data transmission, power safety protection" and fire protection. The company's core business has not undergone major changes. After the company's power business bidding qualifications were fully restored, it failed to win the first batch of bids from the State Grid in 2026, and no new business growth was formed in the first half of the year; at the same time, affected by macro policy adjustments, the fire protection business market continued to shrink.