umbilical cord blood is a precious resource for human life. beijing cord blood bank was established in 1996 and approved by the former ministry of health in 2002 to become china's first cord blood hematopoietic stem cell bank. it provides umbilical cord blood hematopoietic stem cells and matching services to many clinical units and scientific research institutions. the umbilical cord blood supply covers the whole country. at the same time, the beijing umbilical cord blood bank also provides umbilical cord blood preservation services, which are divided into autologous databases and public databases.