Sound Deadening Materials

A: This is the most critical quality divide. Asphalt (Bitumen) sheets are cheap but release toxic odors and melt in summer. Our material uses Grade-A Virgin Butyl Rubber. It is 100% odorless, non-toxic, and maintains its damping properties from -40°C to +150°C. For a wholesaler, this means zero "smell complaints" and high customer retention.

A: The Loss Factor is the true measure of performance. Our premium sheets achieve a Loss Factor of 0.45 (at 20°C), which is significantly higher than the 0.20-0.25 found in budget products. We verify this using the Standing Wave Method in our onsite lab, and we can provide batch-specific COA (Certificate of Analysis) reports upon request.

A: Yes. To ensure your smooth entry into EU and US markets, our products are fully RoHS and REACH certified, confirming they are free from heavy metals and phthalates. Additionally, they meet FMVSS 302 flammability standards, ensuring they are self-extinguishing and safe for automotive interiors.

A: We use a High-Tack Pressure-Sensitive Adhesive (PSA). Unlike cheaper adhesives that dry out, our formula creates a permanent molecular bond with the metal. It has been tested with a 90-degree Peel Strength test (>20N/cm), ensuring it stays bonded for the lifetime of the vehicle, even in tropical or desert climates.

A: Absolutely. As a direct factory, we offer full OEM/ODM services. You can specify the Butyl thickness (e.g., 1.5mm, 2.0mm, 3.0mm) and customize the aluminum foil with your company logo and specific textures (Diamond, Square, or Hexagon) to differentiate your brand in the local market.

A: The aluminum foil acts as the "constraining layer." A 0.1mm foil provides much higher tension, which significantly increases the "shear force" on the rubber layer, leading to better vibration suppression. It also prevents the foil from tearing during high-pressure installation with rollers.

A: Our sound deadening sheets have a shelf life of 24 months when stored in a cool, dry place. We use high-quality siliconized release paper that ensures the sheets peel off perfectly even after two years of storage, preventing "dead stock" issues for wholesalers.