Pioneering security, thermal efficiency, and sustainability. Explore our top engineered composite and metal door solutions.
Empowering Global Openings with Certified High-Strength & Sustainable Entrance Solutions
Zhejiang Larsom Door Co., Ltd. is a professional manufacturer specializing in the research, development, production, and global sales of high-quality security doors, armored doors, steel-wood doors, and customized entrance door solutions.
Since its establishment, Larsom Door has been committed to providing customers around the world with safe, durable, and stylish door products. Today, the company operates a modern manufacturing facility covering more than 16,000 square meters, supported by an experienced team of over 160 skilled employees. With advanced production management and efficient manufacturing systems, our daily production capacity exceeds 200 sets of premium doors, enabling us to meet both large-scale projects and customized orders with reliable delivery.
Guided by the philosophy of "Quality First, Customer Foremost, Innovation for the Future," Zhejiang Larsom Door Co., Ltd. continues to improve its manufacturing capabilities, expand its international market presence, and build long-term partnerships with customers around the world. We welcome global business partners to visit our advanced facility and establish mutually beneficial strategic cooperation.
How advanced materials science is reshaping the carbon footprint and structural durability of modern building entrances.
Moving away from traditional fossil-heavy resins. Larsom’s research integrates agricultural wood fibers with recycled PET polymers to form a high-density, bio-composite substrate that resists moisture absorption while remaining 100% recyclable at its end-of-life cycle.
Developing composite entrance doors featuring polyurethane structural foam cores with aerogel-infused insulation panels. This architecture drops localized U-values below 0.8 W/m²K, satisfying the most stringent Passivhaus and net-zero energy building requirements globally.
Advocating for closed-loop manufacturing where zero post-industrial waste is created. Edge trimmings and sawdust are fully integrated back into the composite extrusion process, significantly mitigating landfill disposal and matching scopes 1, 2, and 3 carbon reduction metrics.
The entrance door of 2025 and beyond is not merely physical. We are embedding low-power NFC chips, biometric face-recognition units, and structural health sensors directly inside the composite core to warn building managers of unexpected impact or extreme environmental shear.
Tailored architectural entry solutions built to withstand high-traffic commercial use and harsh climatic exposures.
Optimized for fire safety, acoustic isolation, and aesthetic durability. Our composite entrance systems minimize unit-to-unit sound transmission (up to 42dB drop) while satisfying stringent fire performance classifications, making them the preferred choice for modern urban living complexes.
Delivering high-end architectural appeal without the structural vulnerabilities of solid timber. Resists warping under intense humidity variations and offers a diverse selection of premium melamine and natural veneers with concealed structural hinges and secure magnetic lock systems.
Engineering doors that directly contribute to building rating credits. By eliminating added urea-formaldehyde and utilizing FSC-certified timber sources alongside low-VOC UV cured topcoats, our doors ensure cleaner indoor air quality index scores.
Inside Larsom’s automated manufacturing lines, where precision engineering meets high-volume production speed.
To continuously improve product quality and manufacturing efficiency, Larsom Door has invested heavily in advanced automated production equipment. Our facilities are equipped with CNC laser cutting machines, CNC bending machines, automatic welding systems, high-speed turret punching machines, automatic sanding machines, and modern powder coating production lines. These advanced facilities, combined with strict quality control procedures, ensure that every door meets international structural, thermal, and security standards.
Pressing Plate Process
Precision Splicing
Edge Sanding
Computerized Engraving
UV Production Coating
Metal Plate Shearing
Plate CNC Cutting
Plate Bending & Form
Our structural punching stations utilize multi-ton automated machinery, ensuring high consistency in aperture spacing, keyhole configurations, and hinge anchor cavities. This automated precision guarantees seamless integration of hardware attachments during final assembly lines.
Standardized workflows, quality parameters, and trade terms designed for real estate developers and import distributors.
We provide full AutoCAD and Revit models, detailed material breakdown sheets, acoustic decibel certificates, and third-party laboratory performance test records to streamline engineering approval workflows.
Flexible supply agreements starting from container-load configurations up to recurring multi-project supply schedules. Benefiting from high volume throughput, we supply highly competitive pricing tiers without compromising structural integrity.
Decades of exporting expertise across 130+ nations. We manage packaging stabilization, load optimization, and comprehensive shipping documentation to ensure smooth port customs clearance in the EU, Americas, and MEA regions.
Adapting entrance technologies to survive severe climates while conforming to international building codes.
Our engineering division systematically reviews global regional regulations to ensure our composite systems satisfy localize codes:
Through severe environmental simulation tests in our local quality laboratories, Larsom doors ensure unmatched longevity in coastal salt spray zones, sub-zero winter regions, and arid desert landscapes alike.
Expert answers regarding composite entry systems, thermal parameters, and wholesale factory capabilities.
Complete your development plans with our comprehensive selection of interior, exterior, and heavy-duty specialty doors.
Larsom Door