The core certification requirements are as follows, depending on the market: For export to the EU: EN 13501-1 (fire resistance rating, typically B-s2, d0) and REACH or RoHS (hazardous substance testing) reports are required. For export to North America: ASTM C423 (acoustic absorption test) and ASTM E84 (surface flammability test, Class A preferred) are required. Generally: ISO 9001 factory management system certification is a basic requirement. Our factory can provide testing reports in full English.

Yes. Various geometric perforations and openwork techniques can be achieved using a CNC engraving machine. However, please note that large-area perforations will significantly reduce the actual sound-absorbing area. If perforations are used for decorative purposes, it is recommended to place a layer of black sound-permeable fabric and non-woven fabric behind the perforated back panel. This ensures visual appeal while preventing the back cavity from being exposed, and the sound-permeable fabric still retains some sound-absorbing functionality.

The key lies in the precise control of the base layer thickness. Before installation, based on the total thickness of the polyester fiber sound-absorbing panels (e.g., 12mm) and other materials (e.g., 9mm wood veneer + 3mm underlayment), leveling layers of plywood or framing at different heights should be applied to the wall surface to ensure that the finished surfaces of all materials are on the same horizontal plane. Finally, a T-shaped trim strip should be embedded at the joint for a smooth transition.

The impact is very small. High-quality UV inks or water-based penetrating inks, with a coating thickness of only 0.02-0.05mm, will only seal a very small number of micropores on the very surface, and the impact on the overall noise reduction coefficient (NRC) is negligible (usually a reduction of <0.05). However, it is crucial to avoid using paint for spraying, as paint will seal large areas of pores and severely impair the sound absorption function.

Absolutely. Through heat transfer printing or digital UV flatbed printing, any wood grain, stone grain, geometric pattern, or artistic image can be precisely replicated onto the surface of the acoustic panel. The pattern layer is extremely thin, barely affecting the original sound-absorbing porosity. Our factory offers custom design services based on provided images. Please consult our sales manager for the minimum order quantity.

The "wall-applying glue method" should be strictly used (glue is only applied to the wall substrate), not the back of the board. If glue accidentally spills, immediately wipe it gently with a damp cloth soaked in alcohol or a special cleaner. Do not wait for the glue to dry completely before scratching it off, otherwise it will damage the texture and color of the board surface.

Absolutely. Polyester fiber acoustic panels are flexible; 9mm thick panels can be safely bent into curves with a radius greater than 300mm, and for 12mm thick panels, a minimum bending radius of 500mm is recommended. During installation, it is recommended to use dry-hanging or keel fixing methods to avoid using rigid adhesives that restrict the bending stress of the panels.

The safest method is to "install first, then drill the holes." First, use a utility knife or jigsaw to roughly drill holes in the panel that are about 5mm smaller than the actual equipment. After attaching the panel to the wall, use an edge trimmer or fine-toothed saw to precisely trim along the edges of the equipment. If you are drilling the same holes in batches, it is recommended that the factory provide a pre-drilling customization service so that the panels can be directly fitted on-site, greatly improving efficiency and reducing dust.

Outside corners (convex corners): It is recommended to cut the panels into 45° diagonal joints (split corners), or use special aluminum alloy outside corner trims. This protects the corners from bumps and adds a clean, streamlined look. Inside corners (concave corners): Two panels can be directly butt-jointed tightly, with the gap controlled within 1mm. Apply neutral, mildew-resistant silicone sealant to seal the joint, or use inside corner trims to finish the edge for a clean and neat appearance.

Single-layer polyester fiber acoustic panels excel at absorbing mid-to-high frequencies, but their absorption capacity for extremely low frequencies (<100Hz) is limited. To address low-frequency standing waves, a composite structure is recommended: add a cavity of at least 50mm between the acoustic panel and the frame, filled with high-density sound-absorbing cotton, or use it in conjunction with a thin-plate resonant sound-absorbing structure. For home theaters or recording studios, it is recommended to combine them with low-frequency traps for comprehensive treatment.

The cavity depth primarily affects the position of the low-frequency absorption peak. A deeper cavity results in better absorption of lower frequencies (for example, a 100mm cavity can significantly improve the low-frequency absorption coefficient around 125Hz). It is recommended to adjust the cavity depth between 50mm and 200mm, with a 50mm cavity being the generally recommended depth, effectively enhancing low-frequency performance without significantly sacrificing space.

A simple estimation method is to first measure the total surface area of ​​the room (four walls + ceiling + floor, the floor is usually excluded), and then determine the coverage of the sound-absorbing material based on the target reverberation time. It is generally recommended to cover 30% to 60% of the total wall or ceiling area. Precise calculations require Sabine's Formula: T60 = 0.161V / A (where V is the room volume and A is the total sound absorption). It is recommended to provide the room dimensions and intended use to the manufacturer so that an acoustic engineer can provide a professional layout plan.