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Shenzhen third-party provider of instrument calibration, testing and certification services, listed on the Shenzhen exchange in 2025.
Founded in 2009 and based in Shenzhen, China, TianSu is a third-party institution that provides instrument calibration, testing and certification services, along with training and consulting. It runs two laboratories, Shenzhen Tiansu Metrology Calibration Laboratory and Shenzhen Lixun Metrology Testing Laboratory. In December 2025 the company raised CNY 600 million in an IPO at CNY 36.80 per share on the Shenzhen Stock Exchange under ticker 301449. Its revenue comes from metrology, calibration and testing services.
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