Zhejiang Larsom Door Co., Ltd. is a recognized leader and professional manufacturer specializing in the comprehensive research, state-of-the-art development, precise production, and global distribution of high-grade security doors, armored doors, steel-wood composite solutions, and customized interior door units.
Driven by industrial innovation, Larsom operates a modernized manufacturing complex spanning over 16,000 square meters. Backed by a dedicated workforce of over 160 highly skilled technicians and engineers, our production floor achieves a consistent daily capacity exceeding 200 sets of premium engineered doors. This robust infrastructure ensures that we easily fulfill large-scale architectural projects, wholesale orders, and tailored OEM specifications with tight delivery deadlines.
Our commitment to quality has driven us to establish an automated, precision-focused manufacturing ecosystem. Larsom Door has invested heavily in cutting-edge machinery including CNC laser cutting platforms, high-speed turret punch presses, automated sanding lines, CNC bending tools, and dust-free UV coating systems. Every door that leaves our factory undergoes strict QC protocols to guarantee outstanding structural stability, longevity, and thermal-acoustic efficiency.
A Melamine Coated Composite Door is an engineered architectural opening system constructed using a multi-layered core—often comprised of solid wood skeleton, MDF (Medium Density Fiberboard), WPC (Wood Plastic Composite), or high-density tubular particleboard—surfaced with resin-impregnated melamine decorative paper. The core components are compressed and thermal-fused together under extreme pressure. The resulting composite structure provides unmatched dimensional stability compared to solid wood doors, rendering it immune to warping, cracking, or swelling caused by changes in temperature and relative humidity.
The protective melamine outer layer acts as an impervious barrier against external wear and tear. Infused with thermosetting synthetic resins, this surface resists scratches, high impacts, chemical stains, and moisture penetration. It provides the warmth and aesthetic appeal of natural wood grains without the high maintenance, continuous painting, and vulnerability of traditional lumber coatings.
Scratch & Abrasion Resistance: Standard melamine overlays meet rigorous EN 438 testing, ensuring high durability in commercial settings such as hotels, hospitals, and educational facilities.
Sound Reduction Ratings: When manufactured with high-density solid composite cores and heavy-duty acoustic seals, our doors achieve sound isolation ratings ranging from 35dB up to 46dB.
Dimensional Stability: Melamine surface encapsulation plus high-performance edge banding (using PUR hot-melt adhesives) limits moisture absorption to less than 1.5%, preventing warping.
Explore how our advanced machinery and skilled workforce process raw metal and wood materials into high-performance architectural doors.
High-pressure thermal presses bond the structural core, wood composite frames, and melamine overlays into a unified door panel under calibrated temperature levels.
Preparation of high-density fiberboard and inner composite blocks to guarantee flat, warp-free structural bases for advanced veneering.
Precise interlocking finger-jointing and wood block splicing minimize inner stress, enhancing structural strength and anti-bending performance.
Multi-station automated sanding profiles calibrate the thickness and clean edges of the door leaf, preparing the substrate for seamless edge banding.
Computer-controlled, high-precision carving spindles mill detailed design patterns and hardware lock mortises onto door leaves with sub-millimeter tolerances.
Advanced ultraviolet-cured coating lines apply environmental-friendly top finishes, ensuring durable protection and color-fastness.
Hydraulic shear lines cut heavy-gauge steel reinforcement plating for armored and high-security composite door models.
High-power fiber laser machines cut complex locks, peepholes, and structural cutouts out of reinforced steel sheet assemblies with exact accuracy.
Industrial press brakes fold outer steel framing components and security panels, creating secure interlocks that prevent physical intrusion.
High-tonnage stamping presses punch hinge slots, dynamic multi-point locking pins, and internal hardware mounts into metal structural sub-assemblies.
Zhejiang's hardware manufacturing hubs concentrate raw material processing, chemical adhesive formulation, and high-performance hardware stamping in close proximity. This local supply chain efficiency significantly reduces transportation and raw material sourcing costs.
With deep experience executing large global projects, Larsom provides customizable door heights, complex core configurations, soundproof specifications, and local fire resistance ratings to meet the demands of international contractors.
Our ISO 9001-certified factory runs multi-stage inspections, from checking timber moisture content to verifying press pressure and finishing coats, ensuring every door meets global standards.
Compare structural metrics to determine the right choice for your project.
| Feature Comparison | Melamine Coated Composite | Natural Wood Veneer | PVC Film Vacuum-Molded | Hollow Core Flush Door |
|---|---|---|---|---|
| Scratch Resistance | Excellent (Resin Cured) | Moderate (Easily Scratched) | Moderate | Poor |
| Moisture Protection | High (Edge-encapsulated) | Sensitive to Humidity | High | Very Low |
| Color Consistency | 100% Uniform Batch Match | Varies (Natural Grain) | Uniform | Varies by paint layer |
| Structural Warping | Anti-Warping Composite | High warp risk | Low | High warp risk |
| Eco-Safety Level | E0 / E1 Certified | E1 Standard | Varies (PVC VOCs) | Depends on glue type |
Melamine-coated composite doors provide excellent color consistency across large production batches, ensuring a uniform look for major construction projects. Unlike natural wood veneer, melamine does not fade or shift in color when exposed to UV light. Furthermore, they do not require regular painting, sealing, or sanding, which reduces long-term maintenance costs for building managers.
Our bathroom-specific models feature composite core blocks combined with water-resistant WPC or MDF skins. We seal all perimeter edges using advanced PUR hot-melt edge banding systems, preventing moisture from entering the core wood layers and eliminating swelling or de-lamination.
Yes. We provide complete OEM and ODM customization. Depending on project specifications, we can install a high-density acoustic board core for hotel rooms (achieving sound isolation ratings up to 46dB) or mineral composite cores to meet structural fire safety regulations.
Our standard MOQ varies based on size and finish customizations, but generally starts at 50 units. Because our 16,000 sqm factory operates automated CNC and pressing systems, our daily capacity exceeds 200 units, allowing us to complete standard orders in 20 to 30 working days.
Larsom Door exports to over 130 countries and regions worldwide, including Europe, the Middle East, South America, Southeast Asia, Africa, and North America. We provide support with customs clearance documentation, test reports, and secure shipping packaging.
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