The resin used in the prepreg system is halogen-free flame retardant epoxy resin, which can be impregnated with carbon fiber and glass fiber to make unidirectional and fabric prepreg; It is suitable for autoclave, vacuum bag pressing and mould pressing; The products meet the flame retardant standards of UL94-v0, DIN5510-2, EN45545-2 R1 / HL3 and can be widely used in automobiles, rail transit, ships and other fields.