Which of the following description on implants is wrong

A、Theexcipientsusedintheimplantmustbebiocompatible;
B、Thematrixmaterialsofimplantsmustbebiodegradable;
C、Itshouldbepackagedinasingledoseinasterilizedway;
D、Thepackageofimplantsshouldbesealedtightlyandtheimplantsshouldbestoredinashadingplace