U.S. stock index futures extended gains; Nasdaq-100 futures rose over 1% at one point, S&P 500 futures up 0.52%, Dow futures up 0.39%.

The State Administration for Market Regulation published three national standards for intelligent manufacturing in China’s steel sector: Intelligent Manufacturing Scrap Steel Smart Factory Design Requirements; Intelligent Manufacturing Steel Smart Factory Digital Twin System Technical Requirements; and Intelligent Manufacturing Steel Industry Multi-Base Manufacturing Resource Collaborative Control System Technical Requirements. The standards target scrap-steel plants, digital-twin systems and cross-site coordination and are intended to support a unified advanced-manufacturing technical requirements framework for China’s steel industry. They address long production processes, numerous operations and complex interfaces, and persistent issues including inconsistent design specifications across plants, duplicated system development, poor data interoperability and difficulty coordinating resources across bases. All three standards mandate a layered, decoupled architecture that defines functional roles and technical boundaries at each layer to standardize intelligent-system design and implementation.

A-shares afternoon session: circuit-board and optical-communications sectors slid sharply; Dongshan Precision and Yangtze Optical Fibre & Cable both reversed after earlier limit-up moves. Selling pressure on AI-hardware names remained pronounced; Sanhuan Group and Shengyi Technology led declines, while Zhongji Xuchuang slipped back into the red.