Group 1 - The 2025 China International Service Trade Fair (CIFTIS) is promoting engineering consulting, construction services, and environmental services at the ongoing China-Africa Economic and Trade Expo in Changsha [1] - The theme for the 2025 CIFTIS is "Digital Intelligence Navigation, Service Trade Renewal," focusing on the digital and intelligent era [1] - Major industry leaders such as Beijing Construction Group and China Petroleum are confirmed to participate, showcasing smart living solutions and green development initiatives [1][2] Group 2 - Beijing Construction Group has a history of over 70 years and has been involved in significant projects like the Tiananmen Square architectural complex and Daxing Airport [2] - The company aims to transform from a "city builder" to a "lifestyle provider" at the 2025 CIFTIS, enhancing the "Beijing Intelligent Manufacturing" brand [2] - The event serves as a platform for enterprises to establish deep cooperation, promoting high-quality development in service trade [2]