System Overview A fiberglass panel (also known as glass fiber insulation board or FR-4) is an asbestos-free composite synthesized from glass fiber and high heat-resistance resin, offering high mechanical and dielectric strength alongside exceptional heat and moisture resistance and superior processability. Widely specified for plastic molds, machine manufacturing, and PCB fixtures, it also performs as a sound-absorbing wall and ceiling material, replacing ultra-fine glass wool felt in cold-storage rooms, broadcast studios, and ventilation trenches. Key architectural advantages include: Wide Temperature & Moisture Resistance: Stable from −30°C to +150°C with no deterioration or mildew, far outperforming traditional cork or wood board. Precision Surface & Processability: High flatness with no pits and standard thickness tolerances make it excellent for drilling, injection molds, and precision PCB fixtures. Effective Sound Absorption: A porous structure reflects and absorbs sound waves when built with rigid, tight walls, ideal for insulation and building acoustics applications.