The criteria for recruiting unpaid blood donors are: recruiting 30 people, regardless of sex, aged 20-53, with a female weight of over 45kg and a male weight of over 50kg, without infectious diseases, hematological diseases and other diseases.
Free recruitment means no cost; There is no reward, which embodies a kind of public morality and public welfare consciousness. A gratuitous legal act refers to an act in which a party simply obtains certain benefits without paying any economic cost, that is, there is no "consideration relationship" in the gratuitous legal act.