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High-performance elastomeric and polyurethane mats designed for structural foundations and rail networks.
Finland's unique geological structure, combined with its ambitious urbanization plans in metropolitan hubs like Helsinki, Espoo, Tampere, and Turku, has placed structural dynamics at the forefront of modern architectural design. As the country transitions toward dense, transit-oriented urban developments, residential and commercial buildings are increasingly co-located with light rail lines (such as the Raide-Jokeri light rail and Länsimetro expansions). This proximity introduces significant challenges related to ground-borne vibrations and structure-borne noise.
Moreover, Finland's commitment to sustainable building practices is driving a massive surge in massive timber constructions (CLT - Cross-Laminated Timber). While timber buildings offer an excellent carbon-neutral profile, their lower structural mass makes them highly susceptible to low-frequency vibrations caused by external traffic, internal HVAC units, and heavy industrial machinery. Consequently, high-performance Vibration Isolation Mats for Buildings have transitioned from a specialized engineering option to a critical necessity under the Finnish Land Use and Building Act (Maankäyttö- ja rakennuslaki) and local SFS standards for acoustic comfort.
Our polyurethane and rubber isolation mats are specifically chemically formulated to maintain their static and dynamic stiffness across temperature swings ranging from -30°C to +40°C, ensuring structural integrity through harsh Finnish winters.
Optimized load distribution and damping index characteristics designed to mitigate the unique low-frequency resonance profiles associated with Finland's rapidly growing timber-frame building sector.
Aligned with Finland's strict environmental footprint targets. Our mats feature zero ozone-depleting substances, low VOC emissions, and support LEED/BREEAM certifications for Nordic green buildings.
Vibration isolation in Finland is highly specialized due to the combination of rock-anchored foundations (common in Helsinki's bedrock) and soft clay soils in coastal regions like Turku. In rock-anchored buildings, seismic and traffic-induced vibrations travel with minimal attenuation directly into the building core. Our customized polyurethane mats serve as a structural break between the bedrock foundation and the concrete substructure.
Key application areas include:
In Finland, building acoustics are guided by the SFS 5907 standard, which classifies residential environments into classes A, B, and C based on acoustic comfort. Achieving Class A (the highest comfort index) near rail lines is practically impossible without decoupling the building foundation.
Our Polyurethane Vibration Isolation Pads provide targeted natural frequencies down to 6 Hz, dramatically reducing structural vibration transmission by up to 95%. This ensures that even developments directly above or adjacent to railway tracks comply with Finland's stringent indoor noise level targets (typically max 30-35 dB LAeq indoors).
Active in the rail transit vibration and noise reduction industry for over 30 years.
Founded in 1995, Changmei Technology has been active in the rail transit vibration and noise reduction industry for over 30 years. The company currently offers more than 300 products across six major series, all focused on vibration and noise control for rail transit, high-end construction, and precision instrumentation.
Through continuous innovation, we have established a strong reputation for delivering high-performance elastomeric and polyurethane materials globally, now specifically tailored to meet the strict structural, environmental, and thermal requirements of the Nordic construction market.
Modern Office Space
National Authorized Patents
Production Visualization & Quality Control Rate
A timeline of innovation, growth, and specialization in vibration control technology.
Build a Chinese national brand. To become a pioneer in vibration and noise control materials for rail transit, high-end construction, and precision instrumentation globally.
Green factory officially comes on stream, optimizing sustainable manufacturing practices.
Green Factory Solar cell workshop area reaches 48,500 m² for low-carbon production.
Smart factory OA & ERP & MES Full Deployment, achieving digital visualization.
Technology Upgrade: Built the only polyurethane continuous foaming mat production line in China.
Following the 'Specialized, Refined, Distinctive, and Innovative' (SRDI) development path, dedicated to urban rail transit.
Industrial Transformation: Entering the Urban Rail Transit Power Supply Sector.
Changmei Technology Established.
Comprehensive solutions covering rail transit, building damping, and industrial equipment isolation.
| Main Products | Category | Subcategory |
|---|---|---|
| Changmei Damping Solutions | Rail Transit & Metro Damping | Track Vibration Damping & Noise Reduction Products |
| Track Fastening & Power Supply Protection Systems | ||
| Building Vibration Damping | Polyurethane Vibration Damping Pads, Rubber Granules, and Building Vibration Isolation Bearings | |
| Industrial Equipment Damping | High-Performance Vibration Damping Pads for Heavy Industrial Equipment |
Five specialized production workshops ensuring high-capacity, high-precision manufacturing.
Our facility operates 22 advanced injection molding machines and 5 compression molding machines. This setup allows for precise control over the physical properties of elastomer compounds, ensuring long-term elasticity and high damping ratios.
Equipped with more than 20 CNC machining centers, EDM machines, and wire-cutting systems. We develop custom molds for complex project requirements, outputting up to 300 sets of tooling annually.
| Category | Annual Output |
|---|---|
| Polyurethane foam isolation mats | 1,500,000 m² |
| Vibration and noise damping products | 500,000 sets |
| Rail power supply insulation products | 100,000 sets |
With China's first domestically developed polyurethane foaming production line, we guarantee consistent density and thickness tolerances, which are critical for predictable structural resonance control in Finnish building designs.
Committed to global quality standards, eco-responsibility, and rigorous laboratory verification.
To serve demanding markets like Finland, our products undergo strict testing. We maintain an integrated management system certified to international standards, providing structural engineers and developers complete peace of mind.
| Standard | Scope & Description |
|---|---|
| ISO 9001:2015 | Product Quality Assurance and Process Standardization |
| ISO 14001:2015 | Environmental Responsibility and Sustainable Production Commitments |
| ISO 45001:2018 | Occupational Health and Safety Management Systems |
| ISO 22163 | Railway Applications Quality Management System (Under Application) |
Our R&D team holds 107 national authorized patents, including 16 invention patents and 28 verified technical achievements. Furthermore, our vibration isolation materials are supported by CNAS Test Reports, confirming their dynamic stiffness properties, fatigue resistance, and long-term creep behavior under sustained building loads.
We also hold CRCC product certifications across 5 categories and 10+ models, demonstrating our status as a premium manufacturer in rail and civil engineering damping systems.
Explore our full range of vibration isolation and acoustic damping systems for Nordic infrastructure projects.
