FR-4 material is a fire code rating, the mean resin represented by the state must be able to extinguish the burning of a material specification, it is not a material name, but a material level, so the current general circuit boards for the FR-4 grade, there are many types, but most are based on four-function (Tera-Function) of the epoxy resin with fillers (Filler) and made of glass fiber composite materials. Colour: Light green Thickness: 0.3-50mm Universal size(width; Length): 1020mmx1220mm Characteristics 1. Stable electrical insulation properties. 2. Good flatness, smooth surface, no pits. 3. High mechanical property and dielectric properties. 4. Good heat resistance and resistant to moisture resistance. 5. Good mechanical workability. Add to Basket