Shanghai RuiYu was established in 2009. Countstar, a brand under RuiYu, is a leading cell analysis equipment provider in China. China's first commercialized image-based cell couter has been launched in 2011. To date, Countstar's global installation has reached 8,000 units. The Cell analyzers have been widely used to support research and development in academic labs, governmental institutes, and biopharmaceutical industry. Guided by the philosophy of international R&D and sales, Countstar has set up the United States office in 2023 and established a sales network across Europe, the United States, Canada, Australia, Japan, Malaysia, and other regions.