Haolin Life Science once won the bid for the procurement project of the community health service center.

CCTV 315 Evening Gala exposed the "all-powerful" issue of extracellular vesicles, and Haolin Biotechnology Co., Ltd. was mentioned. According to the Tianyancha App, Haolin Biotechnology Co., Ltd. was established in June 2019 with Zhang Cheng as the legal representative. The registered capital is 10 million RMB, and the business scope includes the development and application of human stem cell technology, human gene diagnosis and treatment technology, cell technology research and application, etc. The company is jointly owned by Wan Zhiheng and Zhang Cheng. The bidding information shows that the company won the procurement project of "Fumin Road Street Community Health Service Center in Hedong District, Tianjin" in September last year.