Black Rock Wool Board for Sound Absorption

The dense, open-fiber structure provides excellent sound absorption across a wide frequency range. For a typical 50mm thick board (often installed behind perforated panels), the Noise Reduction Coefficient (NRC) commonly reaches 0.90–0.95, significantly reducing echo and reverberation for improved room acoustics in auditoriums, studios, and offices.

The black glass fiber tissue facing offers very low light reflectance, creating a strong "shadow" effect. This is essential in exposed or perforated ceiling and wall systems (e.g., metal, timber slats, or open-cell designs), allowing concealment of structural elements, ducts, cables, and services while preserving the overall acoustic performance and achieving a clean, minimalist aesthetic.

The factory-laminated black glass fiber tissue acts as a durable surface reinforcement, preventing fiber release or erosion even in environments with airflow (e.g., air-return systems in cinemas, stadiums, or exposed industrial ceilings). This ensures long-term cleanliness and maintains indoor air quality without fiber shedding.

Manufactured from inorganic basalt rock, black-faced rock wool is Euroclass A1 non-combustible with a melting point exceeding 1000°C. It does not ignite, propagate flames, or emit toxic smoke, making it a safe choice for high-occupancy venues such as theaters, concert halls, schools, and public buildings where stringent fire regulations apply.

Factory-treated for water repellency, the boards resist moisture absorption and exhibit excellent dimensional stability with virtually no shrinkage, sagging, or warping over time. Being inorganic, they do not support mold or microbial growth, ensuring consistent acoustic and structural performance throughout the building's lifespan.

About Us

• Leading Rock Wool Manufacturer with Proven Industry Expertise
  Founded in 2009, Anhui Liluan Technology Co., Ltd. stands as a trusted name in mineral wool insulation manufacturing. We specialize in producing high-performance rock wool boards, blankets, and pipe insulation materials widely used in construction, industrial, and agricultural applications. With over 15 years of focused development, Liluan combines advanced manufacturing knowledge with strict quality standards, supporting global partners in achieving better thermal, fire, and sound performance.
  
• Fully Integrated Production Lines Backed by Stringent Quality Control
  Our production base operates cutting-edge automated lines designed to maximize efficiency and ensure uniform quality. Each stage of the process—from raw material selection to final product packaging—is subject to rigorous inspections, meeting ISO 9001 and CE certification standards. Our integrated systems enable large-volume, custom-dimension production that adapts seamlessly to specific project requirements, ensuring both product performance and cost-efficiency.
• Scalable Output with Global Market Reach
  With an annual output capacity sufficient to serve large-scale international contracts, Liluan is well-positioned to support long-term industrial supply chains. Our export network spans across Europe, the Middle East, Southeast Asia, and the Americas, reflecting a proven ability to deliver quality consistently and on time. Customers rely on our flexible logistics and responsive support team to simplify procurement and ensure reliability in every delivery.
• Commitment to Sustainable Manufacturing and Customer-Centric Service
  Sustainability is embedded in our manufacturing processes—from energy-efficient kilns to the use of recyclable packaging. Our products enhance building insulation performance, thereby contributing to energy conservation and reducing carbon emissions. We offer personalized pre-sale consultation, technical support, and post-sale assistance, aligning every project with client goals. Whether you are sourcing for infrastructure, OEM supply, or retail channels, Liluan is your capable and responsible partner in insulation solutions.