Fiberglass fibers can enhance the resistance of fiberglass grilles. The strength of glass fiber reinforced plastic fibers is higher than that of steel wires. It has certain resistance, chemical stability, good weather resistance, almost no water absorption and ignition, and its high strength can also be used as tire cord. Normally, fiberglass reinforced plastic fiber filaments are laid in 8-9 layers to maintain the strength of the product. Some manufacturers use high alkaline fiberglass yarn as alkali free yarn, which has low strength, water resistance, and poor alkali resistance.

The filler for fiberglass grating is calcium powder or aluminum powder. High quality fillers have excellent properties, are white in color, have flame retardancy, and are completely fused with resin. The boards produced have beautiful colors, good transparency, and high resistance. On the contrary, inferior fillers are rough and dull in quality, and do not have flame retardancy. The boards produced have no luster, are relatively brittle, and have no resistance.

The appearance of fiberglass grating products has no obvious cracks, few pores, bright and pure color, good transparency, certain resistance, high strength, high surface smoothness, and long service life; The appearance of poor fiberglass grating products has cracks, many pores, impure color, and poor gloss. Its service life is also relatively short.