... F Composite fiberglass geogrid approved by CE,ITB,TBU and UKAS certificate and used to reinforce asphalt and concrete pavement J&F Composite fiberglass geogrid is ... composed of fiberglass filaments coated with an inorganic sizing agent. These ... UV-proof PE film[Certificate]ISO9002, TBU, ITB, UKAS Composite fiberglass geogrid