On April 9, 2025, financial news reported that Hefei Jiyuan Suiyi Hydraulic Technology Co., Ltd. applied for a patent named "A Low - Noise Internal - Meshing Oil Supply Pump" (public number CN 119778261 A) in January 2025. This invention, related to the oil supply pump device technology, can effectively solve the cavitation problem caused by oil entrapment in existing technologies, which in turn leads to significant noise. It consists of components like the oil pump body, outer rotor, inner rotor, guide wheel seat, and drive shaft. The shapes of the inner and outer teeth of the rotors are designed as a combination of arc curves and cycloid tooth profile curves, improving the performance of the oil pump.