The Long March 3B rocket successfully launched the experimental telecommunications satellite Tongxin Jishu Shiyan-15 (TJS-15) from the Xichang Satellite Launch Center in Sichuan, China. This satellite was positioned into a geostationary orbit and is designed to test multi-band and high-speed satellite communication technologies. The TJS series, including the recently launched TJS-15, may serve classified missions related to signal intelligence, early missile warning, and satellite inspection activities. The successful deployment of TJS-15 reinforces China’s advancements in satellite technology and underscores the strategic importance of its capabilities in enhancing national security and operational readiness in space.