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Website: https://phasefour.com
12605 South Van Ness Avenue
Hawthorne, CA
Phase Four
Manufactures RF plasma thrusters (Mass Driver series): electrodeless design (no cathodes), Xe/Kr/air propellants, power 50–500 W range, thrust ~1–10 mN, Isp 800–1500 s, scalable for smallsats to medium platforms. Radiation-tolerant electronics; supports station-keeping, orbit raising, deorbit; flight heritage on commercial/LEO missions.
RobotToday Initiative
Robotics needs a service framework.
RSF defines a common language for robot service capability, lifecycle operations, certification pathways, and service-provider networks.
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U.S. Moves to Ban Chinese Robots: Supply Chain Shock or Strategic Decoupling?
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RobotToday Weekly Industry Briefing: March 23 – March 27, 2026
RobotToday's weekly industry briefing for March 21–28, 2026 covers Physical Intelligence's $1B raise, Amazon's Fauna Robotics acquisition, Agile Robots' DeepMind partnership, the launch of Europe's first robotaxi service, DJI's Avata 360 drone, Skydio's $52M Army order, and the latest in humanoid, AMR, and drone technology.
Unitree Robotics Files IPO — China's Humanoid Robot Leader Targets ¥42B Valuation
Unitree Robotics files for China's STAR Market IPO seeking ¥4.2 billion, backed by ¥1.7 billion in 2025 revenue and ¥600 million adjusted net profit. The humanoid robot maker plans to invest over ¥2 billion in embodied AI foundation models including UnifoLM-VLA-0, which leads the LIBERO benchmark. Analysis of financials, technology roadmap, and market position.
From Pilots to Production: The Counter-Drone Industry Enters a New Phase
The global counter-drone (C-UAS) sector is scaling fast. New EU and US factories, an ․87M US Army contract, and the 2026 FIFA World Cup deployment mark a turning point for autonomous anti-drone technology. Read RobotToday’s March 2026 briefing.
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