1. Beijing Esso Health Technology Co., Ltd.: Beijing Esso Health Technology Co., Ltd. is a mobile internet company that focuses on providing users with high-quality mobile medical services with intelligent hardware as the carrier and mobile health management platform.
2. Beijing Bell Bioengineering Co., Ltd.: Beijing Bell Bioengineering Co., Ltd. was established in 1995, which is a high-tech enterprise specializing in the research, development, production and sales of in vitro diagnostic reagents and supporting instruments.