Precision-engineered picture, corner, and curtain-wall fixed window units manufactured in Foshan, China. Certified to global standards (CE, AS2047, NFRC) for residential and commercial building envelopes.
Operating in the global hub of fenestration manufacturing, Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) ranks among China's top 10 luxury architectural door and window manufacturers. For over 25 years, our engineering facilities in Foshan have delivered certified fenestration packages across Europe, North America, Australia, and the Middle East.
DERCHI products adhere strictly to CE (EN 14351-1), AS2047 N6 cyclonic testing, and North American NFRC performance benchmarks. Every batch undergoes verified static air pressure, water penetration resistance, and structural load deflection audits.
Our dedicated engineering department prepares customized AutoCAD and Revit BIM shop drawings matched directly to project architectural schedules, accommodating bespoke jamb depths, thermal breaks, and structural glass calculations.
Trusted by premier international builders, including long-term UK Schüco installation partners who select DERCHI for multi-unit luxury villa developments. We provide factory-direct cost efficiencies without sacrificing exacting tolerances.
A technical reference guide for structural engineers, façade consultants, and commercial procurement teams evaluating Chinese extrusion factories.
| Performance Characteristic | Target Testing Standard | DERCHI Factory Standard | Procurement Advantage |
|---|---|---|---|
| Alloy Composition & Temper | EN 755-2 / ASTM B221 | Primary 6063-T6 / 6005-T5 Aluminum Ingot | Structural Rigidity High yield strength prevents deflections under positive/negative wind loads. |
| Thermal Transmittance (U-Value) | EN ISO 10077-2 / NFRC 100 | Uw ≤ 1.1 W/(m²·K) with Triple Glazing + Warm Edge | Passivhaus Ready Reduces thermal bridge losses by incorporating PA66 GF25 thermal breaks. |
| Water Tightness Under Pressure | EN 12208 (Class 9A) / AS 4420.5 | Tested to 900 Pa (No Leakage) | Weatherproof Multi-tier vulcanized EPDM continuous gasket seals with equalized drainage. |
| Structural Wind Load Resistance | EN 12210 (Class C5) / AS 2047 (N6) | Design Wind Pressure (DWP) ≥ 4500 Pa | Cyclone Rated Capable of supporting massive picture window openings (up to 12m² per lite). |
| Acoustic Attenuation (Rw / STC) | ISO 717-1 / ASTM E413 | Sound Isolation: Rw 38 dB to 44 dB | Acoustic Shield Dual/Triple IGU filled with 90%+ Argon and laminated PVB/SGP interlayers. |
| Surface Coating Durability | AAMA 2604 / AAMA 2605 / Qualicoat III | AkzoNobel Fluorocarbon (PVDF) / Decoral Woodgrain | 25-Yr Durability Exceptional salt-spray and UV color retention against coastal chalking. |
Analyzing key shifts in sustainable fenestration, building energy efficiency, and modern architectural expectations for 2026 and beyond.
International decarbonization standards (such as EU CBAM) are making low-carbon aluminum billets refined using hydroelectric energy a baseline requirement. DERCHI's green foundry chain reduces the embodied carbon footprint per square meter of window frame by up to 45%.
Architects are increasingly specifying structurally glazed corner fixed windows where frames are fully concealed within exterior soffits and finished flooring. This delivers unobstructed 90° glass-to-glass structural silicone junctions without vertical intermediate mullions.
Next-generation fixed windows integrate Building-Integrated Photovoltaic (BIPV) vision glass along spandrel zones, alongside electrochromic dynamic tinting controlled via IoT systems to regulate Solar Heat Gain Coefficients (SHGC) dynamically.
Actionable answers to technical, logistics, and quality assurance queries commonly raised by international developers, façade contractors, and architects.
Send your architectural window schedules, structural elevations, or CAD drawings directly to our engineering team. We deliver complete shop drawings, thermal calculations, and factory-direct estimates within 24 to 48 hours.