This standard specifies the terms and definitions, classification, structure and materials, technical requirements, inspection rules, inspection methods and markings of epoxy fiberglass cloth adhesive sheet prepregs (hereinafter referred to as adhesive sheets) for multi-layer printed boards, Packaging, transportation and storage requirements. This standard applies to epoxy fiberglass cloth adhesive sheet prepregs for multi-layer printed boards. In this standard, adhesive sheets can also be called prepregs.