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This document specifies the technical requirements for appearance, chromaticity, and solid content of isocyanate modified epoxy resin for plastic copper clad laminate. It describes the corresponding sampling and test methods, specifies the inspection rules and marking, packaging, transportation, and storage aspects, and provides a classification of the product for technical specifications. It is applicable to isocyanate modified epoxy resin made from bisphenol A epoxy resin and isocyanate resin, which can be used in the manufacture of copper clad laminates for printed circuits, electronic insulation materials, and other fields.