Engineered with multi-chamber thermal breaks, argon-filled Low-E IGU glazing, and patented airtight sealing. Manufactured by Guangdong Dejiyoupin Doors and Windows Co., Ltd. for peak thermal envelope performance worldwide.
Precision Thermal Break Extrusions & CNC Robotics
Certified compliance with NFRC, CE, AS2047, CSA, and Passive House standards across 180,000 square meters of production facilities.
18,000+ Completed Installations Across 6 Continents
Lowering operational carbon emissions, optimizing solar heat gain coefficients, and minimizing thermal bridging in luxury villas, hotels, and commercial developments.
North America · Latin America · Europe · Australia · Middle East · Zero Thermal Bridge Standards
Raw structural aluminum features a thermal conductivity of approximately 205 W/(m·K), making untreated metal an aggressive thermal bridge that drains indoor climate energy. At Guangdong Dejiyoupin Doors and Windows Co., Ltd., we transform structural aluminum through advanced multi-cavity polyamide (PA66-GF25) thermal barrier integration, hermetic warm-edge insulated glass units (IGUs), and aerodynamic multi-chamber EPDM co-extruded gaskets.
Modern building specifications demand precise whole-fenestration calculations (Uw values) rather than theoretical center-of-glass ratings. Our technical department calibrates every window assembly to balance Solar Heat Gain Coefficients (SHGC) and Visible Transmittance (VT), guaranteeing that architectural glass assemblies dramatically reduce summer HVAC cooling power while retaining baseline radiant heat throughout sub-zero seasonal weather.
Eliminates perimeter conductive bridging while maintaining equalized mechanical tensile strength under extreme temperature swings.
Dual-seal polysulfide and butyl edges, filled with 90%+ argon gas concentration to suppress convective and radiative heat loss.
Proprietary perimeter locking nodes clamp the sash against continuous multi-fin EPDM gaskets, reducing air infiltration to near zero (Class 4 EN 12207).
From ultra-quiet tilt-and-turn units to massive thermal break panoramic sliding facades, explore our certified systems engineered for developers, architects, and institutional contractors.
Designed for projects demanding strict compliance with international thermal envelop standards. Featuring 70mm to 108mm system depths, multi-chambered polyamide barriers, and concealed heavy-duty hinges. Delivers whole-window Uw values down to 1.1 W/(m²·K) with acoustic dampening up to 45 dB.
Engineered for expansive floor-to-ceiling glass expanses without compromising structural deflection or energy metrics. Stainless steel bottom track mechanisms glide up to 450 kg per sash effortlessly, featuring insulated threshold transitions that defeat water ingress and perimeter condensation.
Fixed glass configurations engineered with ultra-slim sightlines, providing optimal thermal insulation and massive natural daylight penetration.
Custom structural rafters with multi-layer Low-E roof glass units, preventing greenhouse heat build-up while conserving interior warmth in winter.
Combines low-E thermal insulation with heavy-duty laminated PVB/SGP interlayers for maximum cyclonic wind-borne debris defense.
Procurement officers, structural engineers, and major real estate developers are shifting away from standalone product pricing toward whole-life lifecycle cost optimization and strict decarbonization mandates.
Decarbonized Sourcing Mandates
Operational Energy Payback
ASHRAE 90.1, IECC, EU Title 24
Accelerated Site Handover
The fenestration sector is moving beyond basic thermal break cavities toward integrated architectural solutions that balance climate responsiveness, aesthetic transparency, and structural resilience.
Integrating ultra-thin 0.15mm high-vacuum layers inside aluminum glazing pockets achieves center-of-glass U-factors equivalent to insulated solid brick walls (U ≤ 0.6 W/(m²·K)) while dramatically reducing system sash weight.
Active solar-control glass panes tint electronically on command, while integrated window transoms house photovoltaic cells feeding peripheral building sensor arrays.
Multi-cavity polyamide thermal isolators are injected with low-density aerogel or polyurethane foams, enabling paper-thin frame sightlines with zero thermal condensation risk.
Certified as a "China Famous Brand" by Xinhua News Agency, DERCHI combines 25+ years of dedicated fenestration craftsmanship with the volume delivery strength of an industrial titan.
Massive fabrication facility in Foshan featuring multi-station CNC sawing, automatic thermal break assembly, and robotic handling centers capable of delivering 1,000,000+ m² per year.
Over 100 patents including our proprietary Four-Side Six-Point Anti-Theft Lock, guaranteeing high-compression perimeter weatherproofing and unmatched residential security.
From metallurgical spectrometer testing of incoming 6063-T5 aluminum billeting to pressure chamber air/water testing, every batch is verified before container loading.
Fully compliant with international testing codes including CE (EU), NFRC (USA), AS2047 (Australia), CSA (Canada), Energy Star ratings, and ISO 9001 certified manufacturing.
Trusted by landmark hotel chains and high-profile developments including Hilton Hotels, Atour Hotels, and high-end residential estates worldwide. We provide complete technical design, structural deflection calculations, BIM opening drawings, and overseas job-site installation guidance.
Contact UsExplore real-world applications of DERCHI thermal break systems across extreme climates worldwide.
Direct engineering answers regarding thermal breaks, U-factors, frame materials, shipping logistics, and building code compliance.
While uninsulated aluminum is thermally conductive, modern aluminum windows engineered with wide multi-cavity polyamide (PA66-GF25) thermal breaks achieve thermal insulation performance (Uw values) on par with or superior to premium uPVC and wood. Unlike uPVC, which tends to warp, sag, and discolor under high solar heat and UV radiation, structural 6063-T5 aluminum provides immense tensile strength. This allows for significantly slimmer frame profiles, larger uninterrupted glass sashes, and lifespans exceeding 40 to 50 years without structural degradation.
B2B specifiers must always verify the whole-fenestration Uw value rather than the theoretical Ug rating. The Ug measures only the thermal transfer occurring through the central section of the insulated glass unit. The true assembly performance (Uw or NFRC total product U-factor) accounts for thermal bridging through aluminum perimeter profiles, sash joints, warm-edge spacers, and edge-seal effects. Guangdong Dejiyoupin Doors and Windows Co., Ltd. provides certified whole-unit simulation data calculated strictly in accordance with ISO 10077-1 and NFRC 100 standards.
Yes. For coastal properties exposed to ocean salt air and relentless humidity, our aluminum profiles undergo Qualicoat-certified marine-grade fluorocarbon (PVDF) electrostatic spraying or hard-coat architectural anodizing (20-25 micron film thickness). All exposed hinges, fasteners, and internal locking linkages are forged from grade 304 or 316 stainless steel, completely eliminating galvanic and electrolytic corrosion.
For most mixed and warm microclimates, a double-glazed IGU configuration featuring 6mm High-Performance Double-Silver Low-E + 16mm Argon Gas (warm-edge spacer) + 6mm Clear Tempered Glass delivers the sweet spot. This assembly yields an impressive Visible Light Transmittance (VT) above 65%, a Solar Heat Gain Coefficient (SHGC) between 0.25 and 0.30 to block excessive radiant heat, and a low U-factor preventing conditioned interior air loss.
Every window unit undergoes factory-applied peelable protective film coating, reinforced corner guard installations, multi-layer waterproof bubble wrapping, and placement into heavy-duty non-fumigation plywood marine crates. Pre-calculated container loading plans balance axle weight and secure crates with industrial ratchet straps, guaranteeing damage-free arrival across international container terminals.
We supply complete international trade documentation packages tailored to your destination port: Commercial Invoices, Detailed Packing Lists (with units labeled by building floor and window opening number), Bill of Lading, Certificate of Origin (including FTA preferential duty forms where eligible), structural engineering calculation reports, and factory quality warranty certificates.
Submit your architectural blueprints and opening schedules. Our fenestration engineering specialists will calculate thermal loads, recommend optimal profile systems, and return a comprehensive technical quotation within 24 hours.