Sound Absorption Coefficient: In accordance with the ISO 354 standard, high-quality two-component sound-absorbing cotton should have an NRC (Noise Reduction Coefficient) of ≥0.85, demonstrating exceptional performance particularly in the 500 Hz–2000 Hz frequency range.
Environmental Performance: Must comply with the RoHS directive; adhesives containing harmful substances such as formaldehyde or benzene must be avoided to ensure indoor air quality.
Fire Rating: Architectural applications require a Class A non-combustible rating (GB 8624-2012), while industrial scenarios may demand higher temperature resistance limits (e.g., ≥300°C).
Ease of Installation: Roll-form materials (e.g., 50 mm thick, 10 kg/m³ density) are easy to cut and install, making them suitable for complex curved surfaces; for board-type products, edge treatment is critical to prevent sound leakage through gaps.