Used primarily in epoxy resin systems to initiate and control the curing process, enabling the resin to harden into a durable, chemical-resistant solid. Commonly applied in coatings, adhesives, sealants, and composite materials for industries such as construction, automotive, and aerospace. Provides strong mechanical properties and thermal stability to cured epoxy systems. Suitable for both industrial and DIY applications where reliable bonding and long-term performance are required.