Flagship High-Performance Window & Architectural Door Systems
Every system is custom-manufactured in our Foshan campus, integrating high-grade 6063-T5/T6 multi-chamber aluminum extrusions, polyamide technoform thermal breaks, and automated argon-filled insulated glazing units.
Hurricane Rated
Custom Aluminum Window Hurricane Impact Proof Double Glazed French Bay Window Smart Aluminum Casement Windows
Heavy Duty
Aluminium Exterior Sliding Doors Heavy Duty Lift and Slide Door for Architectural Projects Custom Size OEM ODM CE Certified
Acoustic Rated
Australian Exterior Patio Folding Door Aluminum Soundproof Folding Doors Accordion Room Divider Puerta Plegable
Security Villa
2026 OEM PSL Luxury Modern Aluminum Metal Wooden Home Villa Residential Entrance Security Front Entry Exterior Doors For Houses
Tilt & Turn
Aluminum-wood Combination Aluminum Wooden Clad Wood Grain Chinese Vintage Style Inward Opening Tilt Turn windows
Gas Strut Awning
OEM Modern Thermal Break Aluminium Glass Top Hung Push Out Flip up Gas Strut Awning Window for Villas Kitchen with Roller Blind
Crittall Style
Modern Concealed Frame Aluminum Sliding Door Crittall Style Soundproof Thermal Insulation Double Glazing Tempered Wine Cellar
Triple Glazed
Australian Standard Aluminum Exterior Glass Sliding Door System Aluminium Double Triple Glazed Sliding Door And Window Design
Manufacturing Capacity That Secures Global Contract Timelines
Headquartered in Shishan Town, Nanhai District, Foshan—the world's preeminent hub for precision aluminum extrusion—Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) combines end-to-end extrusion, thermal-break crimping, automated glass fabrication, and multi-stage testing within a massive integrated industrial footprint.
Semantic Fenestration Engineering: How China Redefined Global Architectural Glazing
Over the past two decades, the global fenestration supply chain has experienced a fundamental paradigm shift. Historically regarded as high-volume component assemblers, top-tier Chinese manufacturers such as Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) now spearhead advanced structural fenestration R&D. By pairing primary virgin 6063-T5/T6 aluminum alloy extrusions with multi-cavity polyamide insulating strips (PA66 GF25 reinforced with 25% chopped glass fiber), Chinese engineering teams achieve overall whole-window heat transfer coefficients (Uw ≤ 0.8 W/m²·K) capable of meeting and exceeding strict Passive House Institute (PHI) standards, the German Gebäudeenergiegesetz (GEG), French RE2020, and British Approved Document Part L guidelines.
The Mechanics of Polyamide Thermal Barrier Optimization
Thermal bridging in standard aluminum frames historically yielded severe conductive heat loss and interior condensation. Contemporary Chinese fabrication employs precision-knurled, multi-cavity thermal break extrusions injected with low-density polyolefin insulation foams. This tri-barrier design decouples exterior environmental temperatures from the interior building envelope, elevating the condensation resistance factor (CRF) well above 75 and delivering unmatched acoustic attenuation up to Rw 45 dB.
Modern architectural requirements demand far more than mere daylight transmission. Façade engineers, commercial curtain wall developers, and bespoke residential architects require structural wind resistance up to Wind Load Class C5 / 5000 Pa, driven by severe cyclonic weather occurrences along coastal regions in Australia, Florida, the Caribbean, and Southeast Asia. The integration of finite element analysis (FEA) during the profile design phase ensures that structural deflection under maximum negative pressure conforms strictly to L/175 or L/250 criteria without risking seal failure, air infiltration, or glass dislodgement.
International Performance Compliance Matrix
Rigorous multi-jurisdictional empirical test reports validating thermal, acoustic, air, water, and structural capabilities across world benchmarks.
| Engineering Metric | International Standard | Tested Range / DERCHI Value | Compliance Certification |
|---|---|---|---|
| Thermal Transmittance (Uw / SHGC) | EN ISO 10077-1 / NFRC 100 & 200 | Uw: 0.78 – 1.30 W/(m²·K) | SHGC: 0.22 – 0.45 | CE / Energy Star / NFRC |
| Air Permeability / Leakage | EN 12207 / AS2047 / ASTM E283 | Class 4 (≤ 0.1 m³/h·m² @ 600 Pa) | EN 14351-1 / AS2047 |
| Watertightness Under Pressure | EN 12208 / AS2047 / ASTM E331 | Class E1500 (Watertight up to 1,500 Pa dynamic) | AAMA / AS2047 Pass |
| Wind Load Resistance | EN 12210 / AS4055 / ASTM E330 | Class C5 (±3000 Pa Service / ±5000 Pa Ultimate) | Florida Miami-Dade TAS |
| Acoustic Sound Transmission | ISO 10140-2 / ASTM E90 | Rw 38 – 46 dB (OITC 32 – 38) | Acoustic Lab Certified |
| Burglary Resistance Rating | EN 1627 / RC2 – RC3 / PAS 24 | Patented 4-Side 6-Point Lock + P6B Glass | National Invention Patent |
Intelligent CNC Fabrication & Zero-Defect Quality Control
At our Shishan smart production facility, every aluminum extrusion profile undergoes precision milling on 5-axis digital machining centers. Automated saw lines execute double-miter cuts with a tolerance window within ±0.2mm, ensuring perfectly hermetic corner joints.
- Automated corner-crimping with injected two-part structural epoxy gaskets
- Continuous laser automated helium-fill detection for insulated glass units
- Xinhua News Agency Certified: Nationally Recognized "China Famous Brand"
- Full traceability from ingot extrusion billet to project site container crating
Technological & Sustainability Procurement Trends (2026–2035)
Anticipating regulatory updates, embodied carbon policies, and smart architecture demands across North America, Europe, Australia, and the Middle East.
Low-Carbon Recycled Aluminum Billets
With the enforcement of the EU Carbon Border Adjustment Mechanism (CBAM) and global ESG audits, procurement shifts toward hydro-powered low-carbon aluminum billets (≤4.0 kg CO²/kg Al). DERCHI utilizes certified traceable green aluminum extrusions with certified EPDs (Environmental Product Declarations).
Vacuum Insulated Glass (VIG) Hybridization
Combining tempered Vacuum Insulated Glass (0.1mm micro-vacuum gap) with Low-E argon insulated units yields profile depths under 75mm while achieving center-of-glass thermal ratings of Ug = 0.40 W/m²·K, eliminating bulky triple/quadruple sash weight constraints on high-rise balconies.
Smart IoT Building Envelope Interoperability
Concealed electromechanical chain actuators, magnetic contact alarms, and electrochromic dynamic solar tinting glass integrated directly into central BACnet / KNX building management systems, automatically purging heat via night-cooling purge cycles while preserving envelope security.
Minimalist Flush Transitions & Zero Sills
Architectural villa designs demand 100% barrier-free floor continuity. Integrated drainage sub-sill trough profiles channel torrential downpours away from concealed tracks, marrying seamless aesthetic Crittall sightlines with Class E1200 hydraulic water protection.
Six Distinct Engineering & Operational Advantages
From preliminary BIM modeling and structural load analysis to export packaging and on-site contractor installation protocols, our 25-year manufacturing heritage provides absolute project certainty.
Patented 4-Side 6-Point Security
Unlike standard generic casement locks that latch on a single side, our proprietary invention patent engages six active anti-lift mushroom cam heads across all four sash perimeter quadrants, elevating burglary resistance to European RC3 / PAS 24 standards.
In-House 30+ R&D Engineering Dept
Our dedicated fenestration engineers utilize THERM & WINDOW software for finite isothermal heat-transfer modeling, delivering stamped engineering wind calculations, CAD shop drawing packages, and Revit BIM parametric families within 48 to 72 hours.
Multi-Jurisdiction Worldwide Certification
One factory holds genuine testing credentials for every major market: CE (EN 14351-1) for the EU, NFRC & Energy Star for the USA, AS2047 & AS1288 for Australia/New Zealand, and CSA for Canada, eliminating third-party inspection bottlenecks.
Custom Whole-House Architectural Envelope
We supply unified, coordinated architectural packages: thermal break windows, minimalist panoramic sliding glass walls, luxury solid security entrance doors, smart glass sunrooms, and interior wooden doors with perfectly harmonized RAL finish coatings.
Extreme Weather & Impact Hardening
Engineered for super typhoons, coastal saltwater corrosion, and high-altitude snow loads. SentryGlas (SGP) laminated safety interlayers and AAMA 2605 fluoropolymer (PVDF) 3-coat powder coatings ensure 25+ years of zero-fading, chalk-free surface durability.
18,000+ Delivered Landmark Projects
Trusted supplier to international hotel brands including Hilton and Atour, ultra-luxury residential enclaves in Beverly Hills, private Mediterranean coastal villas, and high-density residential towers across Europe, North America, Oceania, and Southeast Asia.
Professional Procurement Audit: Vetting China Window Suppliers
Avoid critical failure modes by following our engineering verification checklist prior to issuing initial purchase orders and production deposits.
Extrusion Wall Thickness & Billet Grade
Ensure your supplier verifies primary virgin 6063-T5/T6 alloy with structural wall thickness matching or exceeding GB/T 5237 / AAMA standard (≥1.4mm for casement windows, ≥2.0mm – 3.0mm for heavy-duty lift-slide doors). Reject remelted secondary scrap scrap-billet materials that exhibit inferior tensile strength and brittle grain structures.
Polyamide Thermal Barrier Integrity
Confirm the usage of genuine PA66 GF25 insulating strips (such as Technoform Bautec). Low-cost competitors frequently substitute brittle PVC strips that distort under elevated solar radiation, causing glass sealant rupture, vacuum loss, and irreversible structural frame delamination.
Autonomous Glass Processing & IG Seals
Verify that insulated glass units are produced using dual-seal barrier systems: primary polyisobutylene (PIB) vapor seal followed by secondary structural silicone or two-part polysulfide. Insist on warm-edge hybrid stainless-steel/polymer spacers to suppress perimeter condensation.
Frequently Asked Questions for Global Fenestration Importers
Real-world procurement answers on energy performance validation, overseas shipping safeguards, technical drawings, and warranty liability.
Are your window systems fully CE marked and compliant with EN 14351-1?
Yes. DERCHI fenestration products exported to the European Union are CE marked and tested in accordance with EN 14351-1. We supply complete Declarations of Performance (DoP), factory production control (FPC) audit documentation under ISO 9001:2015, and accredited third-party test reports covering air permeability, watertightness, and wind resistance.
Can you achieve regional U-value targets for GEG (Germany), RE2020 (France), or Title 24 (California)?
Absolutely. Our fenestration engineering department simulates whole-window thermal dynamics using specialized software. By pairing 75mm–105mm multi-chamber thermal break profiles with triple insulated glazing units (Low-E coatings, warm-edge spacers, and 90% argon gas fill), we easily attain target U-values ranging from Uw = 0.75 W/(m²·K) to 1.2 W/(m²·K).
How do you safeguard large glazed units against damage during international ocean freight?
Every order is crated using non-fumigation OSB wooden crates lined with high-density EPE foam shock-absorption liners, with individual glass pane corner protectors and anti-scratch electrostatic surface films. Containers are custom-loaded with internal steel bracing and silica desiccant bags to prevent micro-vibration stress fractures and tropical container sweating.
What architectural hardware systems and finishes are offered?
We maintain direct global OEM partnerships with top European hardware manufacturers including Siegenia, Hoppe, GU, and Roto Frank, alongside our proprietary patented four-side multi-point locking gear. Surface treatments include AkzoNobel powder coatings in the complete RAL color catalog, fluorocarbon PVDF finishes for coastal zones, and deep-electrophoresis wood grain textures.
What is your typical production lead time and minimum order quantity (MOQ)?
For custom architectural projects, our typical fabrication turnaround is 25 to 35 calendar days following CAD shop drawing approval and deposit receipt. We support custom residential villas and small boutique developments without arbitrary large MOQs, while our 1,000,000 m² annual throughput accommodates multi-tower commercial developments smoothly.
Do you provide structural calculations, shop drawings, and installation guides?
Yes. Our engineering service package includes full 2D AutoCAD fabrication details, 3D structural connection schematics, glass static deflection analysis, and comprehensive step-by-step bilingual installation manuals. Video installation technical conferences and on-site engineering supervision are available for large-scale developments.
What warranties back your aluminum profiles, hardware, and sealed glass units?
DERCHI provides a comprehensive 10-year factory warranty on all thermal break aluminum extrusions and factory powder-coat finishes against peeling or blistering, a 10-year warranty on insulated glass units against seal failure or internal condensation fogging, and a 5 to 10-year operational warranty on European hardware systems.
Can we consolidate windows, architectural doors, and glass sunrooms in one shipment?
Yes. Our whole-house system capability allows contractors and developers to source entrance security doors, casement windows, heavy-duty panoramic lift-and-slide doors, bi-fold doors, interior wooden doors, and freestanding glass sunrooms from a single coordinated manufacturer, consolidating shipping containers and optimizing landed logistics costs.
Initiate Your Architectural Project Review & Direct Factory Proposal
Send your elevation schedules, architectural drawings, or technical window specifications to our engineering team. We deliver itemized pricing, structural feasibility analyses, and certified thermal calculations within 24 to 48 hours.