Explore our premium door and window assemblies rigorously fabricated to comply with European CE standards, Australian AS2047, and North American NFRC testing criteria.
Foshan Manufacturing Base
Years Engineering Mastery
Patents & Global Certs
Skilled Fabrication Techs
Recognized systematically among the Top 10 fenestration and entrance brands in China, Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) engineers advanced aluminum and glass doors that bridge aesthetic demands and extreme physical tolerances. Operating out of our expansive 180,000 m² smart production base in Foshan, Guangdong, we maintain total vertical integration over raw billet sourcing, extruding, thermal break assembling, CNC machining, and automated glass bonding.
Unlike simple assembly facilities, our industrial enterprise controls 100% of internal quality checkpoints. From the high-performance 6063-T5 / 6060-T6 architectural alloy profiles to German-imported PA66GF25 structural thermal barrier strips, every single unit is custom-calibrated for high-humidity coastal weathering, torrential monsoon resistance, and maximum lifecycle durability.
Factory Verification: Fully licensed under CE EN14351-1, ISO 9001:2015, Australian AS 2047 (N6 Cyclone Tested), and UL 10C Fire Resistance regulations to accelerate local permit approvals worldwide.
When procurement managers, facade consultants, and general contractors evaluate exterior aluminum and glass doors for international projects, CE certification under harmonized standard EN 14351-1 (Windows and Doors) represents far more than an administrative stamp. It represents an audited Declaration of Performance (DoP) validating air permeability (EN 12207), watertightness (EN 12208), wind resistance (EN 12210), and overall thermal transmittance (U-factor under ISO 10077-1/-2).
In hot and humid tropical zones, such as the Philippines, Vietnam, Indonesia, and the UAE, the primary failure mode of inferior doors is galvanic corrosion, frame thermal expansion bowing, and joint delamination. DERCHI resolves these failure points by deploying polyamide strips reinforced with 25% transverse glass fiber, matching the linear thermal expansion coefficient of aluminum. This prevents sash-to-frame binding and gasket shearing over decades of direct thermal loading.
| Performance Vector | CE Standard Test Protocol | DERCHI Engineered Benchmark | Commercial Value to Importer |
|---|---|---|---|
| Wind Load Resistance | EN 12211 / EN 12210 | Class C5 / AS2047 N6 Rating (≥ 3000 Pa) | Structural survival under typhoon & hurricane pressures |
| Water Tightness | EN 1027 / EN 12208 | Class E900 (900 Pa static pressure) | Zero water infiltration during severe cyclonic precipitation |
| Thermal Insulation | EN ISO 12567-1 / EN 10077 | Uw ≤ 1.1 W/(m²·K) with Triple IGU | Substantial reduction in commercial HVAC chiller runtimes |
| Acoustic Attenuation | EN ISO 10140-2 / EN ISO 717-1 | Rw ≥ 42 dB (Acoustic PVB Laminate) | Acoustic isolation for downtown high-traffic hospitality |
| Mechanical Durability | EN 1191 / EN 12400 | Class 8 (≥ 1,000,000 cycles) | Eliminates frequent hinge and pivot warranty callouts |
Commercial glazing procurement is experiencing a major structural shift driven by regional carbon mandates (such as the EU's Carbon Border Adjustment Mechanism), heightened occupant acoustic awareness, and seismic structural requirements. Project stakeholders who align their supply chain with these emerging technological paradigms secure tangible advantages in lifetime asset valuation:
Architects are continuously demanding invisible structural boundaries. Pivot doors exceeding 4 meters in height and oversized 6-meter multi-track lift-and-slide assemblies require heavy-gauge bottom rollers, concealed multi-point hydraulic hinges, and stiffened aluminum-mullion interlocks capable of supporting individual panel weights up to 600 kg.
Global developers are enforcing Scope 3 embodied carbon limits. Future sourcing will strictly favor manufacturers utilizing secondary aluminum melted via hydropower or certified low-carbon primary aluminum billets (producing under 4.0 kg CO2e per kg Al), coupled with zero-VOC fluorocarbon and anodized finishes.
Mechanical locking systems are transitioning to concealed motorized locking hardware. Architectural pivot and sliding doors now feature biometrics, magnetic reed status sensors, motorized concealed drives, and direct Building Management System (BMS) integration, eliminating exterior wire routings.
The manufacturing threshold for export-oriented aluminum and glass door fabricators has reached aerospace-level tolerances. DERCHI actively invests in five core manufacturing methodologies that define modern high-performance fenestration:
1. Multiaxial Five-Axis CNC Machining: Hand drilling and manual punch-pressing are fully obsolete for high-precision European multi-point lock hardware. Our Foshan lines employ 5-axis dual-head CNC milling systems running CAD/CAM nesting data directly from shop drawings, ensuring lock cylinders, concealed pivots, and drainage routings match within ±0.1 mm tolerances.
2. Structural Silicone Glazing (SSG) & Warm-Edge Spacers: Condensation and perimeter seal failure remain common risks in commercial double and triple glazed units (IGU). We implement composite warm-edge polymer spacers (such as Technoform or Swisspacer) combined with two-component silicone secondary seals to eliminate cold bridging and reduce perimeter seal stress caused by differential thermal movements.
3. Advanced Surface Treatments for C5 Marine Environments: Marine resorts and coastal villas demand surface finishes capable of surviving 3,000+ hours of continuous neutral salt spray testing (ISO 9227). DERCHI utilizes Qualicoat Class 2 architectural powder coatings and AAMA 2605 fluorocarbon (PVDF) 3-coat finishes, ensuring that deep blacks, architectural bronzes, and metallic textures do not chalk, blister, or fade under intense UV rays.
Essential regulatory, technical, and logistic clarifications for international developers, contractors, and architects.
Even for projects located in Southeast Asia, the Middle East, or the Americas, CE certification according to EN 14351-1 provides third-party verified mechanical strength, wind load resistance, and water tightness metrics. It ensures the importer is receiving structurally verified architectural assemblies rather than untested, low-grade decorative profiles.
All architectural door and window elements undergo custom crating. Profiles are wrapped in multi-layer protective PE film, corners are secured with heavy-duty molded buffer caps, and glass panels or assembled frames are placed into fully enclosed, fumigated marine-grade plywood crates with built-in moisture desiccant packs and shock-absorbing rubber bases.
Yes. Our in-house engineering department consists of over 30 structural facade designers. Upon receiving rough structural opening dimensions and architectural plans, we generate complete CAD shop drawings, anchoring detail sections, glass stress calculations, and hardware scheduling for sign-off prior to factory tooling.
Standard architectural configurations carry a fabrication lead time of 25 to 35 business days following final approved shop drawings. Custom powder coat colors, specialized acoustic curved glass laminates, or thermal breaks requiring specific extrusion molds typically require 35 to 45 business days.
DERCHI backs all aluminum extrusion frames with a 10-year surface and structural warranty, and hardware systems with a 5-year replacement warranty. If a mechanical component fails during normal operation, factory replacement hardware is dispatched promptly via air courier to ensure zero project delay.
Yes. We offer zero-barrier concealed drainage thresholds engineered for luxury transitions between interior living spaces and exterior pool decks. Integrated sub-sill hidden water channels ensure that even with a completely flush track, driven rainwater is drained outward without structural backup.
Send your door schedule, rough opening sizes, or CAD elevations. Our bilingual technical team provides detailed quotes, static calculations, and free shop drawings within 24 hours.