Beijing Huazhixin Technology Development Co., Ltd. applied for a patent called "A Low - Power Miniature Plunger Oil Pump for UAVs" (public number CN 119778131 A) in December 2024, as reported by financial news on April 9, 2025. This pump, belonging to the UAV technology field in the aviation industry, is designed to improve efficiency and working stability. It includes a housing with an oil - passing chamber and an oil chamber, a plunger that slides in the oil - passing chamber, and a driving part to make the plunger move back and forth. One - way valves are set up to control the flow of oil, ensuring stable oil supply to the UAV's power system.