In fiberglass grilles, fiberglass filaments can enhance the resistance of the grille. The strength of glass fiber reinforced plastic fibers is higher than that of steel wires. It has a certain degree of weather resistance, chemical stability, and good weather resistance. It is almost non absorbent and fire-resistant, and can also be used as tire cord with high strength. Under normal circumstances, fiberglass fibers are laid in 8-9 layers to maintain the strength of the product. Some manufacturers use high alkali fiberglass yarn as alkali free yarn, which has low strength, poor water and alkali resistance.

The filler for fiberglass grating is calcium powder or aluminum powder. High quality filler with excellent performance, white color, flame retardancy, and complete integration with resin. The consumed board has beautiful color, good transparency, and high electrical resistivity. On the contrary, inferior fillers have rough and dull quality, and do not have flame retardancy. The consumed board lacks luster, is relatively brittle, and lacks resistance.

Fiberglass grating products have no obvious cracks in appearance, few pores, bright and pure color, good transparency, certain resistance, high strength, high surface brightness, and long service life; Poor quality fiberglass grating products have cracks, numerous pores, impure colors, and poor glossiness in appearance.