What is the Church’s position on donating human unfertilized eggs?

Unfertilized eggs are not human children, but donating eggs for the purpose of providing “material” with which embryos are “manufactured” is condemned by the Church. The Catechism of the Catholic Church states:

2376 Techniques that entail the dissociation of husband and wife, by the intrusion of a person other than the couple (donation of sperm or ovum, surrogate uterus), are gravely immoral. These techniques (heterologous artificial insemination and fertilization) infringe the child's right to be born of a father and mother known to him and bound to each other by marriage. They betray the spouses' "right to become a father and a mother only through each other."