If the color paste itself is not done well, white spots will appear on the fiberglass grating during the dyeing process.

2. The viscosity of the raw material block is too high, which affects dispersion and mixing.

3. The curing time of resin is relatively short, which can easily cause impermeable white spots on glass fibers.

4. The feeding speed is too fast, and then the resin is pumped out.

The dispersion of fiberglass and powder fillers is also a problem.

6. After being subjected to inappropriate external mechanical forces, separate the local resin from the fiberglass.