KC58 epoxy glass fiber electrical insulating tape is a strip of insulating binding material of a certain width, impregnated with a high temperature heat curing epoxy resin by a unidirectional, continuous twist, alkali-free glass fiber yarn after treatment. This tape has good softness and viscosity, opened in a network structure, easy to roll back, no loose wire, no overlap. The product has high strength, impact resistance, high modulus, low elongation, no hysteresis and no eddy current loss and other excellent properties.