Epoxy board is made of glass fiber cloth and epoxy resin. It's hard, not easy to conduct electricity, and widely used.
Most commonly, it's used in circuit boards, like in home routers and computer hosts. Its good insulation can prevent circuit short - circuits, and it's strong enough to hold various components securely.
It's also used in some mechanical processing situations, such as making part supports and insulating gaskets. Since it's not easy to corrode and wears well, it can sometimes replace metal to save money.
Epoxy boards may be used in the casings or inner structural parts of electronic devices too. For example, in some small electrical controllers, they're used to divide different internal areas, which can fix components and provide insulation, making them safe and handy.
In a word, this material is basically a "versatile insulating board". It can be helpful wherever insulation, support, or structural parts are needed. Plus, it's moderately priced and easy to process, so it's quite popular in the electronic and mechanical fields.
