CoCocina 250x420mm 0.5-5mm Black Fiberglass Sheet Glass Fiber Sheet Epoxy Glass FR4 Glass Fiber Plate for DIY Craft - 0.5mm
- FR4 is a thermosetting industrial laminate consisting of a continuous filament glass cloth material with an epoxy resin binder. It has characteristics of high strength, excellent electrical properties and chemical resistance not only at room temperature but also under humid or moist conditions..