2025 ZGC Forum: Dagong Technology DG-M40 Tethered UAV Breaks 400m Altitude Ceiling, Redefining Low-Altitude Economy New Quality Productive Forces

Beijing, China — In March 2025, the annual Zhongguancun Forum (ZGC Forum), themed "New Quality Productive Forces and Global Scientific and Technological Cooperation," commenced in Beijing, serving as a national-level platform for China's most cutting-edge innovations. At the epicentre of this technological showcase, the low-altitude economy and unmanned aerial vehicle (UAV) frontier technologies dominated the spotlight. Beijing Dagong Technology Co., Ltd., originating from Zhongguancun Yanqing Park, unveiled its next-generation DG-M40 tethered UAV system. By shattering the 400-metre altitude ceiling—doubling the industry standard of 200 metres—while maintaining heavy payload capacity, Dagong Technology has cemented its position as the global benchmark for industrial-grade drones in emergency communication and high-altitude broadcasting.

The DG-M40’s premiere at the ZGC Forum’s Low-Altitude Technology Exhibition Centre represents a quantum leap from merely "being able to fly" to achieving "rock-solid stability." This 400-metre altitude breakthrough is the culmination of a systematic reconstruction across tethered control, propulsion, and power management. Dagong Technology’s proprietary power transmission system utilises a near-kilovolt high-voltage direct current (HVDC) design, drastically reducing the cross-sectional area and weight of the tether cable to significantly boost net payload capacity. Furthermore, engineers decoupled the tethered control system from the power management system, vastly enhancing deployment flexibility in combat-like scenarios.

In terms of flight control, the DG-M40 achieves an astonishing ±0.01-degree attitude control precision. It integrates advanced encrypted transmission technology, ensuring "zero-latency, zero-stutter" downlink transmission of 4K/8K ultra-high-definition imagery. Most disruptively, Dagong Technology has overcome the industry's reliance on satellite positioning. By fusing visual positioning and laser ranging technologies, the tethered UAV achieves autonomous Navigation Reconstruction. This capability ensures continuous, stable operation even under GNSS denial or severe electromagnetic interference,彻底 breaking the operational bottlenecks of complex physical environments.

This technological supremacy is forged in a decade of extreme scenario tempering. Founded by an elite team from Tsinghua University, Dagong Technology has amassed over 70 independent intellectual property rights. In the emergency communication sector, Dagong Technology partnered with China Mobile in 2017 to launch the world’s first emergency communication high-altitude base station system. Pioneering a "fiber optic + power composite cable" technology, the system achieved 24-hour uninterrupted aerial hovering, a 5-kilometre signal coverage radius, and concurrent access for 1,500 users. From restoring communication within three hours of the 2017 Jiuzhaigou earthquake to ensuring 72 hours of continuous coverage during the 2023 Typhoon Doksuri mega-floods in the Beijing-Tianjin-Hebei region, Dagong Technology's tethered UAVs have consistently served as the information guardians at disaster sites. Most recently, during the 2025 Shigatse earthquake in Tibet, the system integrated with Beidou short-message emergency services, achieving a breakthrough in next-generation satellite-ground fusion communication rescue.

Beyond serving as a lifeline in disasters, Dagong Technology is the premier recorder of major historical moments. During the 80th Anniversary Commemoration of the Victory of the Chinese People's War of Resistance Against Japanese Aggression and the Global Anti-Fascist War in September 2025, a Dagong Technology tethered UAV hovered steadily at 150 metres above the Jinshui Bridge before the Hall of Supreme Harmony in the Forbidden City. It provided a unique aerial perspective, broadcasting the majestic panorama of Tiananmen Square to a global audience. This marked the tenth consecutive year Dagong Technology has partnered with China Media Group (CCTV) to execute aerial live-broadcast missions for national-level events. From the 70th National Day Celebrations to the Centenary of the Founding of the Party, Dagong Technology has pioneered a new era in large-scale event broadcasting technology through the stability of its 12G bandwidth real-time transmission.

Dagong Technology’s transformation from a single-equipment manufacturer to an air-space-ground integrated solution provider has garnered immense capital and institutional momentum. In August 2025, the company completed a tens-of-millions-yuan Series B funding round exclusively invested by Shanghai Ivy Capital. Previously, its DG-M20 tethered UAV model was honoured with a selection into the "New Achievements in Network Development Exhibition" at the National Museum of China.

This rapid ascent is deeply bound to the low-altitude industrial ecosystem of Zhongguancun Yanqing Park. As one of the first "Civil Unmanned Aerial Vehicle Test Zones," Yanqing offers optimal "open-door flight" airspace conditions, saving costs and accelerating R&D iterations. "We aim not only to let the world see China through our lenses but also to let Chinese standards lead global industry development," stated Shen Shizhou, Founder of Dagong Technology. Driven by new quality productive forces, Dagong Technology is spreading its wings from the foot of the Great Wall, accelerating toward its vision of becoming the globally leading industrial-grade UAV solution provider.