Two aspect epoxy that's UL tested According to Standard 746A, formulated to improve arc resistance. Bonds effectively to range of substrates. Regular gelcoat formulated for use with polyester resins and vinylester resins will not adhere to epoxy surfaces, nevertheless epoxy adheres quite very well if placed on polyester resin surfaces. https://www.propanraya.com/id/produk/epoxy-fast-dry