Engineered for high wind load resistance, high thermal barriers, and unmatched water tightness across challenging coastal and urban architectures.
Certified AS2047 and NFRC ratings proven in coastal resorts, luxury high-rises, and commercial complexes.
Guangdong Dejiyoupin Doors and Windows Co., Ltd. delivers factory-direct consistency with zero-error tolerances.
In architectural design, engineering high performance is not merely an aesthetic label. It requires quantifiable structural resilience against air permeability, wind load pressures reaching Category 5 cyclonic forces, and continuous thermal break insulation that cuts HVAC operational loads significantly.
We formulate strictly using virgin 6063-T6 primary aluminum extrusions with profile wall thicknesses up to 3.0 mm, guaranteeing high torsional stability under extreme structural wind pressures.
Incorporates our exclusive Four-Side Six-Point locking invention patent, distributing tension evenly along perimeter frames to resist both dynamic typhoon shocks and high-force forced entry.
Multi-cavity PA66 GF25 thermal breaks stop indoor-outdoor temperature conduction, achieving low U-values down to 1.1 W/m²K when combined with high-spec argon-filled low-E glazing.
Rooted in Foshan, China's manufacturing heartland for architectural aluminum, Guangdong Dejiyoupin Doors and Windows Co., Ltd. has spent over 25 years establishing elite engineering benchmarks. Operating under the DERCHI brand, we maintain absolute zero-error fabrication protocols across 180,000 square meters of intelligent infrastructure.
By pairing proprietary research and development with robotic German CNC cutting centres, we provide global general contractors, real estate developers, and wholesale distributors with unmatched supply predictability, strict compliance auditing, and tailor-made architectural solutions.
Carefully engineered for high-exposure exterior envelopes, coastal villas, luxury condominiums, and commercial towers demanding uncompromised longevity.
Equipped with co-extruded composite EPDM compression gaskets, heavy-duty concealed friction hinges, and multi-chamber profiles that achieve high acoustic attenuation (STC 42+) and water-tightness rated over 700 Pa.
Discover Window Systems
Featuring precision tandem stainless-steel rollers engineered to carry high-mass insulated double and triple glass units weighing up to 400 kg per panel. Ultra-smooth glide paired with zero-barrier flush thresholds.
Discover Door SystemsReinforced integrated steel-core aluminum rafters engineered for high snow and wind loads with heat-reflective Low-E laminated roofs.
Acoustically damped solid core timber doors paired with multi-layer surface protection to prevent warping in humid climates.
Procurement directors and commercial specifiers are re-evaluating supply chain dynamics. What constitutes high competitiveness in future window and door sourcing?
Stringent net-zero building regulations mandate ultra-low Solar Heat Gain Coefficients (SHGC < 0.25) and high insulation metrics without compromising visible light transmission.
With escalating global storm frequencies, commercial tenders now routinely specify high wind load ratings exceeding 5.5 kPa, demanding reinforced structural mullions and safety lamination.
Architectural demand is moving towards high glass-to-frame ratios. Narrow interlock sightlines (down to 20 mm) must carry massive pane weights without compromising air-seal pressure.
Developers are bypassing intermediaries. Procurement managers favor integrated Tier-1 factories equipped for custom shop-drawing validation, 3D BIM modeling, and direct sea-freight logistics.
| Performance Parameter | Standard Commercial Windows | Next-Gen DERCHI High Performance Systems |
|---|---|---|
| Structural Wind Load (Pa) | 1500 – 2500 Pa (Prone to deflection during squalls) | Exceeds 5000 Pa (Certified hurricane and typhoon impact resistant) |
| Water Impermeability | 250 – 350 Pa (Risk of sill overflow under tropical monsoons) | Up to 900 Pa (Concealed stepped drainage with non-return valves) |
| Thermal Insulation (U-Value) | 2.8 – 3.8 W/m²K (Conducts exterior heat quickly) | Down to 1.1 W/m²K (PA66 multi-cavity thermal break + Argon Low-E glass) |
| Locking Mechanism | Single/Double hook latch (Vulnerable to levering) | Patented Four-Side Six-Point lock invention (High anti-theft security) |
| Acoustic Damping (Rw) | 28 – 32 dB (High transmission of street & flight noise) | 42 – 48 dB (Acoustic PVB laminated + asymmetric double glazing) |
Behind every DERCHI window is an uncompromising commitment to precision fabrication. We eliminate human measurement error by deploying fully digitalized CNC machinery from cutting through to corner crimping.
Over 1,000,000 m² annual output supporting high-volume project deliveries.
30+ senior engineers continuously pioneering new hardware and thermal patents.
Over 18,000 high-profile projects delivered across 6 continents.
Custom profile extrusion, specialized glass combinations, and bespoke finishes.
From international five-star resorts to luxury coastal villas and multi-unit residential towers, DERCHI systems deliver enduring value. Trusted by Hilton Hotels, Atour Hotels, and prime landmark developments.
Managing overseas orders demands comprehensive quality control. Our systematic 8-step process prevents miscommunication, delays, and site-fitting errors.
In-depth structural calculation of opening schedules and wind-load pressures.
Custom profile matching based on regional environmental exposure.
Transparent factory-direct cost proposal itemized per system module.
Confirming powder coatings, glass lamination, and lock specifications.
Securing prime raw material allocations across automated production lines.
Millimeter-accurate site verification to ensure flawless rough-opening installation.
BIM & CAD drawing approvals locking all tolerances prior to machining.
Comprehensive video guides, anchor schematics, and engineering supervision.
Guangdong Dejiyoupin Doors and Windows Co., Ltd. holds a "Grand Slam" of international fenestration credentials, meeting structural, safety, and acoustic standards across 100+ jurisdictions.
Answers to key technical questions searched by international developers, façade consultants, and procurement professionals.
A high-performance fenestration system relies on a structural balance of 6063-T6 aluminum extrusions, multi-cavity PA66 polyamide thermal barriers, automotive-grade continuous EPDM compression gaskets, and double/triple low-emissivity glass filled with argon gas. Crucially, the system must hold certified test data demonstrating wind resistance exceeding 5000 Pa, water tightness exceeding 700 Pa, and an overall U-value below 1.6 W/m²K.
Standard patio doors fail when oversized glass deflects the bottom rail, crushing cheap rollers and compromising bottom seals. DERCHI high-load sliding systems employ solid 304 stainless steel quad-rollers carrying up to 400 kg per sash smoothly. To eliminate water ingress during storms, our profiles incorporate an embedded stepped high-water dam drainage sub-sill with unidirectional valves that discharge water without wind back-pressure.
Under severe dynamic wind pressure, single-point latch locks allow corner deflection along sash frames, breaking weather gasket seals and admitting rain and drafts. Guangdong Dejiyoupin Doors and Windows Co., Ltd. developed the patented Four-Side Six-Point locking mechanism, which mechanically anchors the sash around all four perimeter edges, locking it rigid against hurricane negative suction forces.
Working directly with our 180,000 m² Foshan manufacturing base eliminates distributor markups, saving 25% to 40% on material costs. It also ensures direct communication between your project architects and our engineering team, with strict pre-assembly inspections and ocean export packaging that keeps delivery times on schedule.
For coastal luxury villas and seaside hotels, standard electrostatic finishes degrade quickly. We recommend Qualicoat Class 2 / Class 3 fluorocarbon (PVDF) coating or 25-micron architectural anodization. These finishes resist salt crystallization, UV degradation, and chalking, maintaining profile finish integrity for over 20 years.
Submit your door and window schedules, BIM files, or CAD drawings. Our structural team will provide itemized system recommendations and a factory-direct quotation within 24 hours.
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