Niell makes sensors and measurement and control systems for aviation, rail transit and energy applications.
Based in Xiamen, China and founded in 2010, Xiamen Niell Electronics Co., Ltd., trading as Niell, designs and manufactures vibration and pressure sensors, wind turbine vibration products, oil hydraulic online monitoring systems and elevator health monitoring systems. Its revenue comes from high-end sensors, MEMS chips and monitoring systems for aerospace, defense and industrial equipment makers. In December 2025 the company raised about CNY 300 million in Series D funding led by returning investor Haiwang Capital, with new investor CRRC Capital Management.
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