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Nanjing Kejin Industrial Co., Ltd. was established in 1996 at Southeast University, restructured in 2000, and is headquartered at the Nanjing Jinkang Science and Technology Innovation Center. The company specializes in the research, development, and production of medical devices. It is recognized as a High-Tech Enterprise in Jiangsu Province, serves as the Vice President Unit of the Nanjing Medical Device Management Association, and is designated as a Nanjing Credit Management Demonstration Enterprise and a Contract-Honoring and Trustworthy Unit. The company also functions as a postgraduate practice base for Southeast University, and the Kejin trademark is a well-known brand in Nanjing. Nanjing Kejin boasts over 20 years of experience in the research, development, and production of medical devices, with a dedicated workforce of over 100 employees, including more than 40 professionals in medical device R&D and technical roles. In 2016, its new product received the "Nanjing Biomedical New Product Certificate" and was included in the "First Batch of Nanjing Innovative Product Promotion and Demonstration Recommendation Catalog" in 2018. The company adheres to the ISO9001 and ISO13485 quality management system standards and the Medical Device Production Quality Management規(guī)范. It develops and manufactures a variety of medical devices, including ultrasonic transcranial Doppler blood flow analyzers, ultrasonic bone density meters (calcaneus), ultrasonic bone density meters (radius/tibia), dual-energy X-ray bone density meters, arterial stiffness detectors, and body composition analyzers. These products are distributed nationwide, serving various levels of medical and health examination institutions, and the company provides continuous after-sales support to its customers.