Source directly from Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI). With 25+ years of specialized engineering in Foshan, China, we combine 6063-T5/T6 structural alloys, precision thermal breaks, and high-performance safety glazing to deliver unmatched weatherproofing, seismic stability, and thermal efficiency.
Consult with DERCHI's in-house fenestration facade engineers. We provide free CAD and BIM shop drawings aligned with your architectural door and window schedules within 24 hours.
Contact UsAs one of China's top 10 luxury door and window manufacturers, our vertically integrated manufacturing facility eliminates intermediary markups and guarantees compliance with regional building codes.
Our aluminum door and window systems undergo extreme testing for cyclic wind load pressure, water penetration resistance (exceeding 450 Pa), and air infiltration, making them suitable for cyclone-prone tropical coastlines and harsh oceanic climates.
Consolidate your entire fenestration bill of quantities. From oversized pivot doors, insulated French doors, and bi-fold systems to commercial curtain wall facades and interior flush doors, ship entire container loads (FCL) seamlessly to slash freight costs.
Our workshop utilizes automated double-head mitre saws, four-axis CNC machining centers, and automated corner crimping lines. Every door sash and frame achieves tolerance limits under ±0.5mm, paired with 100% dry-fit pre-assembly testing before crating.
Exporting fragile fenestration glass across long maritime trade routes requires specialized packaging. Every unit is insulated with multi-layer protective PE film, corner corner-guards, honeycomb paperboards, and encased in custom reinforced non-coniferous timber crates engineered for rough sea voyages and rapid forklift unloading.
Located in Shishan Town, Nanhai District, Foshan — the global epicenter of structural aluminum extrusions — DERCHI leverages prime raw material supply chains, state-of-the-art AkzoNobel fluorocarbon (PVDF) coating lines, and Italian anodizing baths.
By deploying automated barcode-tracked manufacturing execution systems (MES), our project managers provide international buyers with real-time video inspection check-ins, metallurgical mill test certificates, and full traceability reports from extrusion ingot to finished crated assemblies.
Contact UsThe global architectural fenestration sector is experiencing an unprecedented structural transition driven by stringent energy efficiency directives, net-zero embodied carbon mandates, and digitalized construction ecosystems. Commercial developers, facade contractors, and institutional procurement officers are moving away from fragmented regional fabricators in favor of direct engagement with technologically advanced tier-one Chinese factories capable of offering verified environmental compliance and full BIM data packages.
1. Decarbonization and Low-Carbon Recycled Aluminum Ingot Sourcing: Leading architectural projects across Oceania, North America, and Western Europe now routinely mandate the disclosure of Environmental Product Declarations (EPD). Tier-1 manufacturers in China are progressively transitioning to hydro-powered aluminum smelters and minimum 75% post-consumer recycled aluminum alloys (Circal standards). This drastically reduces embodied carbon from 16.7 kg CO²e/kg down to under 4.0 kg CO²e/kg of extruded profile without diminishing tensile strength or weatherability.
2. Direct Integration with Digital Twins and Building Information Modeling (BIM): Traditional paper shop drawings are being replaced by native Autodesk Revit and IFC digital twin assets. International B2B buyers now evaluate suppliers based on their capacity to feed parametric fabrication data directly into the general contractor’s 3D building models. DERCHI supplies LOD 350-ready parametric components that integrate exact thermal transmittance values, structural anchor loading vectors, and glazing solar heat gain coefficients (SHGC).
3. Resilience-Driven Design (Extreme Weather & Climate Adaptation): Due to the intensification of cyclonic activity and coastal storms, wholesale procurement specifications are transitioning toward mandatory AAMA 501.1 dynamic water tests and ASTM E1886 / E1996 missile impact certifications. Procurement strategies now prioritize pre-glazed window-door combinations with continuous vulcanized EPDM gaskets and multi-cavity pressure-equalized drainage chambers.
Compare standard market fenestration profiles against DERCHI high-performance export specifications.
| Performance Attribute | Standard Commercial Grade | DERCHI Engineered System | International Benchmark Testing |
|---|---|---|---|
| Alloy Composition & Temper | Recycled Mixed Scrap / 6063-T4 | Primary 6063-T5 / 6063-T6 Billet | ASTM B221 / GB/T 5237.1 |
| Thermal Barrier Insulation | Standard PVC Strips (Degrades UV) | PA66 GF25 Polyamide Glass-Fiber Bar | DIN 16941 / EN 14024 Low U-Value |
| Surface Coating Resilience | Standard Powder Coat (40-60 μm) | Qualicoat Class 2 / PVDF ≥ 3 Coats (80 μm) | AAMA 2605 / 3,000-hr Salt Spray Test |
| Acoustic Attenuation (STC/Rw) | Rw 28 - 32 dB (Single/Dual Glaze) | Rw 42 - 46 dB (Triple Glaze + Warm Edge) | ISO 10140-2 / ASTM E90 |
| Water Tightness Under Static Pressure | 150 - 300 Pa Water Resistance | ≥ 700 - 1000 Pa (N6 Cyclone Tested) | AS 2047 / EN 12208 (Class 9A/E1050) |
| Air Infiltration Rating | ≤ 1.5 L/(s·m²) | ≤ 0.1 L/(s·m²) Ultra-Airtight Seal | AS 4420.4 / EN 12207 Class 4 |
The contemporary architectural movement demands clean, borderless sightlines without sacrificing acoustic isolation, thermal protection, or building envelope security. The intersection of architectural aesthetics and mechanical fenestration engineering has given rise to several critical design innovations:
• Multi-Chamber Polyamide Isobaric Cavity Design: By integrating 24mm to 34mm wide glass-fiber reinforced polyamide (PA66 GF25) thermal breaks into the internal extrusion chambers, heat convection within the frame core is virtually eliminated. Combined with polyurethane foam core filling, our systems achieve ultra-low frame U-factors (Uf ≤ 1.1 W/m²·K), fulfilling the stringent Passivhaus guidelines for sub-zero and extreme-heat environments.
• Minimalist Narrow Sightlines with Concealed Sashes: Demands for ultra-wide panoramic openings have rendered traditional 80mm-100mm bulky frames obsolete. DERCHI’s slim-profile architectural series features concealed structural hinges capable of supporting sash weights of up to 400kg, while the visible frame perimeter is reduced to an astonishing 28mm-38mm. This maximizes solar daylight transmission by up to 22% while providing sleek modern facades.
• Smart Access & Motorized Bioclimatic Integration: The incorporation of IoT hardware into door-window systems is accelerating. Modern exterior aluminum pivot and casement doors from our Foshan facility feature concealed European motorized multi-point locksets seamlessly compatible with biometric fingerprint scanning, 3D facial recognition, smart home automation (KNX, Zigbee, Control4), and motorized automated rain-sensor closing actuators.
Authoritative technical, commercial, and logistic guidance for commercial specifiers, developers, and import managers.
Our aluminum assemblies have undergone full NATA-accredited testing regimes for AS 2047 and AS 1288 standards. This includes static deflection testing reaching up to Serviceability Limit State (SLS) and Ultimate Limit State (ULS) pressures corresponding to the highest N6 cyclonic wind ratings, along with water penetration testing at 450-700 Pa and air infiltration benchmarks. Complete official test reports are provided for council approval and certifier compliance sign-offs.
For installations situated within 1 km of ocean shorelines or severe saltwater spray conditions, we strictly specify Qualicoat Class 2 powder coatings or Fluoropolymer 70% Kynar 500 / Hylar 5000 PVDF (Polyvinylidene Fluoride) three-coat finishes. These exceed AAMA 2605 requirements, resisting color fading, chalking, and severe salt fog attack for over 3,000 to 4,000 hours of continuous ASTM B117 exposure tests.
Yes. 100% of our production is engineered to order. We accommodate non-standard opening dimensions, bespoke arched or polygonal geometries, curved glass profiles, custom color RAL matching, customized thermal breaks, and specific European hardware brands (including Siegenia, Roto, GU, Hoppe, and CMECH). Our dedicated engineering department generates detailed CAD and Revit shop drawings for formal client sign-off prior to extrusion cutting.
For standard architectural profiles with powder-coated RAL finishes, manufacturing lead time typically averages 25 to 35 working days from final approved shop drawings. Custom extrusion die creation adds 10 to 14 days. We maintain flexible MOQ policies: while we regularly dispatch 20ft and 40ft High Cube containers (FCL) for multi-unit commercial developments, we also support customized LCL orders for custom private luxury villa projects.
Every fenestration unit undergoes rigorous factory packaging protocols: glazing faces are shielded with electro-static PE films; sash perimeters feature high-density EVA shock-absorbing corner buffers; and multiple window units are banded together with steel strapping inside ISPM 15 fumigation-exempt fully enclosed marine plywood crates. Every ocean container is strategically braced with heavy-load timber dunnage and industrial cargo airbags.
Each shipment includes numbered assembly drawings, 3D installation exploded views, and sequential multilingual site manuals. DERCHI’s English-fluent engineering support desk provides live high-definition video walkthroughs and sub-frame anchoring consultations matched to your specific project time zone (including Australian AEST/AWST, European CET, and North American EST/PST).
Submit your architectural drawings, window schedules, or tender documents. Our engineering team will review your structural specifications and deliver an itemized B2B factory quote within 24 hours.
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