Epoxy resin is a type of thermoset resin commonly used in glue, paint and composite materials. NIMS and ISMA have developed a new thermoset plastic recycling system capable of easily decomposing epoxy resins in an aqueous solution of a naturally derived peptide. The use of this system may promote the reuse and recycling of plastics, including carbon fiber reinforced plastics (CFRP)—carbon fibers combined with an epoxy resin matrix—by a wide range of industries.