Epoxy resins are a class of thermosetting polymers known for their excellent mechanical properties, strong adhesion, chemical resistance, and dimensional stability. They are formed through the reaction of epoxide groups (typically from epichlorohydrin) with hardening agents (or curing agents) like amines, acids, or anhydrides. Epoxy resins are widely used in industries such as construction, electronics, aerospace, marine, and automotive, making them one of the most versatile materials in modern engineering and manufacturing.