1. Henan Zheng Da stem cell bank technology co., ltd was established on August 6, 20 18.

2. Zhongke Bosheng Bioengineering Co., Ltd. was established on 20 19.

3. Henan Hualong Human Stem Cell Resource Bank Co., Ltd. was established on June 5438+1October 7, 2020. Simply put, stem cells are cells with infinite or eternal self-renewal ability, which can produce at least one type of highly differentiated daughter cells. Over the years, the definition of stem cells has been constantly revised and defined from different levels. Most biologists and medical scientists believe that stem cells are cells from embryos, fetuses or adults, which have unlimited self-renewal, proliferation and differentiation under certain conditions. They can produce daughter cells with the same phenotype and genotype as themselves, that is, specialized cells that constitute tissues and organs, and differentiate into progenitor cells.