Chinese electronic control unit industry

Under the empowerment of 5G, the Chinese electronic control unit (ECU) industry is accelerating its transition towards a 'centralized domain control and cloud network collaboration' architecture, radiating new vitality. The low latency (<20ms) and high bandwidth characteristics of 5G have broken through the bottleneck of traditional CAN bus, promoting the centralized evolution of ECU from distributed 70+units to domain controllers (DCUs). Huawei MDC, Desay SV, Zhongke Chuangda and other enterprises have launched intelligent vehicle control platforms that integrate 5G communication modules, achieving multi domain fusion control of power, chassis, cabin and other areas. As the core of vehicle road cloud integration, C-V2X TCU will have a market size of 7.35 billion yuan by 2025, occupying the dominant position in 5G TCU and supporting real-time decision-making for L3+level autonomous driving. FOTA/SOTA remote upgrade coverage has reached over 90%, reducing the iteration cycle of vehicle functions from months to days. Brands such as Jike and Hongqi have achieved full stack ECU air upgrades. On the policy side, the pilot program of 'vehicle road cloud integration' covers 20 cities, and mandatory standards such as GB 44495-2024 will be implemented in 2026, forcing the localization rate of domestic ECU to exceed 70%. The market size of China's automotive ECU is expected to reach 69 billion yuan by 2025, with an annual growth rate of over 15%, and is transforming from a 'functional actuator' to an 'intelligent terminal nerve center'.