High-Performance Aluminum Windows & Doors for Global Projects
Engineered to exceed strict European building codes, regional wind loads, and thermal efficiency requirements. Explore our flagship CE-certified systems deployed across luxury residences, high-rise apartments, and commercial venues.
Hitech Modern American Design House Front Pivot Door Large Entrance Security Door
Wazzor Hurricane Rated Double Tempered Glass Sliding Doors Balcony Patio System
Elegant Modern Design Aluminum Clad Wood Windows Vintage Casement Windows
Customized Thermal Insulation Villa Casement Glass French Door with SDL Grills
HUACAI 2 Track Aluminium Sliding Window with Fly Screen Double Glazed Apartment
Hitech Main Entry Exterior Pivot Door Contemporary Architectural Residential Front Door
Modern 90mm Steel-Aluminum Soundproof Glass Partition Wall Double Glazed Blinds
Aluminum Alloy High-Rise Sliding Windows & Casement Systems for Hotel & Commercial Use
Why International Architects & Bulk Importers Partner With Us
Operating as Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI), we combine 25+ years of precision extrusion, advanced thermal-barrier integration, and full-spectrum international testing certifications.
Patented "Four-Side Six-Point" Security
Unlike standard off-the-shelf multi-point latches, our proprietary invention patent provides uninterrupted perimeter engagement across all four sash edges. This locks out forced entry up to European RC3 standards while distributing compression equally across continuous EPDM weatherstrips.
Xinhua "China Famous Brand" Authority
Officially vetted and recognized as a leading national brand by Xinhua News Agency, DERCHI maintains elite standing in manufacturing integrity. This institutional authority gives tier-one general contractors and institutional procurement boards absolute confidence in supply chain reliability.
Multi-Jurisdiction Certification Suite
Our fenestration assemblies carry rigorous third-party certifications including CE marking under EN 14351-1 for the European Union, NFRC & AAMA for North America, AS2047 for Australasia, and ISO 9001 total quality assurance covering the entire manufacturing lifecycle.
Deep Dive: Decoding EN 14351-1 Requirements for Aluminum Fenestration
Securing genuine CE-certified aluminum windows requires strict compliance with harmonized European standards. Sourcing teams must understand how factory production control (FPC) and type testing validate real-world performance under severe atmospheric stresses.
For European building developers, importing aluminum fenestration involves legal accountability under the Construction Products Regulation (CPR 305/2011). Under standard EN 14351-1 (Windows and doors - Product standard, performance characteristics), a Declaration of Performance (DoP) is only valid when verified through accredited laboratory test reports covering air permeability, watertightness, structural wind resistance, and overall thermal transmittance (Uw).
At DERCHI, our thermal-break profiles utilize 6063-T6 architectural aluminum alloy extruded to wall thicknesses between 1.8mm and 3.0mm, interconnected with imported polyamide PA66 GF25 thermal isolation strips. This configuration breaks the metallic thermal bridge, preventing condensation while ensuring the frame withstands positive and negative wind gust pressures up to 3000 Pa.
| Performance Characteristic | Harmonized Test Standard | European Norm Classification | DERCHI Engineering Capability | Compliance Status |
|---|---|---|---|---|
| Air Permeability | EN 1026 / EN 12207 | Class 1 to Class 4 | Class 4 (≤ 3 m³/[h·m²] at 600 Pa) | ✓ CE Compliant |
| Watertightness (Static) | EN 1027 / EN 12208 | Class 1A to Class 9A / Exxx | Class E1200 (No leakage at 1200 Pa) | ✓ CE Compliant |
| Wind Load Resistance | EN 12211 / EN 12210 | Class 1 to Class 5 / A to C | Class C5 (Deflection < 1/300 at P1=2000Pa) | ✓ CE Compliant |
| Thermal Transmittance (Uw) | EN ISO 10077-1 / EN ISO 10077-2 | Design Dependent (W/m²K) | Uw 0.79 – 1.2 W/m²K (Triple/Low-E Argon) | ✓ Passive Verified |
| Acoustic Attenuation (Rw) | EN ISO 717-1 / EN ISO 10140 | dB (C; Ctr) Ratings | Rw = 36 dB to 45 dB (Laminated Acoustic PVB) | ✓ CE Compliant |
| Burglary Resistance | EN 1627 to EN 1630 | RC1N to RC4 | RC2 / RC3 (Patented 4-Side 6-Point Lock) | ✓ Certified |
Future Procurement Trends in Commercial & Residential Fenestration
B2B procurement is undergoing fundamental shifts driven by climate directives, digital fabrication, and structural minimalism. Commercial developers and importers must anticipate these shifts when establishing manufacturing partnerships.
Embodied Carbon & Recycled Billets
With the European Carbon Border Adjustment Mechanism (CBAM) entering full enforcement, procurement directors are shifting toward primary alloys produced with renewable hydro-power and high post-consumer recycled aluminum content (>75%).
- EPD (Environmental Product Declaration) traceability
- Lower Scope 3 greenhouse gas reporting
Zero-Energy & Passive House Envelope Mandates
National building regulations (such as Germany's GEG, France's RE2020, and the UK's Future Homes Standard) have rendered non-thermal systems obsolete. Demand has permanently pivoted toward multi-cavity thermal break extrusions insulated with aerogel and expanded polyurethane foam cores.
- Triple/quadruple warm-edge glazing (Ug ≤ 0.5 W/m²K)
- Elimination of thermal bridging along slab edges
Direct-to-Fabricator BIM Integration
Global architectural firms are moving away from disconnected 2D CAD files. Procurement teams now require parametric IFC and Revit BIM families directly linked with CNC milling machines, cutting order-to-production lead times from weeks down to hours.
- Automated structural deflection modeling
- Zero-error shop drawing signoff protocols
Engineering Advancements Driving Next-Gen Window Systems
Fenestration is transforming from passive building boundaries into dynamic, smart building envelopes. Discover the mechanical and chemical engineering innovations embedded in our latest systems.
Ultra-Narrow Sightlines with Concealed Sashes
Modern architectural design prioritizes daylight transmission and clean sightlines. Our advanced minimalist systems integrate hidden perimeter sashes with frame sightlines down to 22mm. This delivers a frameless aesthetic while maintaining full multi-point sealing and thermal barrier performance.
Qualicoat Class 3 & Marine-Grade Finishes
For coastal and industrial environments subject to ISO 12944 C4 and C5 corrosive conditions, our automated finishing lines apply fluorocarbon PVDF and hyper-durable Qualicoat Class 2/3 polyester powder coatings that resist salt-spray corrosion for over 3,000 hours.
Mechatronic Concealed Drives & Smart Home IoT
Large-format tilt-turn vents and heavy lift-slide doors can weigh up to 400kg. We incorporate concealed motor drives, biometric sensors, and automated micro-ventilation locks compatible with standard KNX, Zigbee, and BACnet building management systems.
Frequently Asked Questions on Importing Aluminum Windows
Technical guidance direct from our engineering and logistics directors to help you navigate international procurement, customs clearance, and quality assurance.
Q1 How do you provide proof of CE marking compliance for customs and building inspectors?
For every project destined for the European Economic Area, we supply the official CE Declaration of Performance (DoP) under EN 14351-1. This includes test documentation from recognized notified bodies verifying air permeability (EN 12207), watertightness (EN 12208), wind load resistance (EN 12210), and calculated thermal values (EN ISO 10077-1/2).
Q2 What is the factory lead time for custom architectural aluminum window orders?
Standard fabrication takes 25 to 35 days following approval of detailed shop drawings and deposit clearance. For custom extrusion profiles or specialized RAL dual-tone powder-coated orders, initial production runs require approximately 35 to 45 days. Rapid-track scheduling is available for large commercial deliveries.
Q3 How do you prevent glass breakage and frame scratches during long ocean voyages?
Every window unit is wrapped with protective peel-off film, protected with high-density EPE foam corner guards, and sealed inside fumigated, ISPM-15 compliant plywood crates. Crates are secured within 40ft HQ shipping containers with heavy-duty lashing straps and desiccants to prevent condensation damage during transit.
Q4 Can your technical team customize profiles to meet specific thermal U-value targets?
Yes. Our in-house team of 30+ R&D engineers uses finite element analysis (FEA) to calculate thermal distribution across profile cross-sections. We adjust polyamide thermal strip depths (up to 39mm), chamber insulation inserts, and glass configurations (triple glazing with double Low-E and argon fill) to match regional energy targets like German GEG or French RE2020.
Q5 What hardware brands do you integrate into your aluminum window and door systems?
We supply our patented proprietary hardware systems, including our "Four-Side Six-Point" anti-burglary locks. We also partner with premium European hardware manufacturers such as Siegenia, Roto, Hoppe, and G-U to meet strict developer and regional architectural specifications.
Q6 What are your minimum order quantity (MOQ) and sample verification policies?
For standard architectural profiles, our MOQ begins at 50 square meters. For custom architectural developments, mockups and pre-production corner samples can be fabricated and shipped via air freight for developer and client sign-off before full production runs begin.
From Architectural Drawings to Site Installation Guidance
A structured project lifecycle ensuring precision, schedule control, and technical compliance across every window opening.
CAD/BIM Review & R&D
In-depth structural analysis of structural spans, wind pressures, glass thicknesses, and thermal barrier requirements.
Technical Proposal & Approvals
Supply of structural calculations, cross-section shop drawings, RAL color chips, and hardware specification signoffs.
CNC Machining & 360° QC
High-precision 5-axis CNC extrusion cutting, automated corner crimping, gasket insertion, and multi-stage seal testing.
Crating & Remote Support
Heavy-duty ocean crating, container load distribution plans, and detailed assembly/installation manuals for local contractors.
Ready to Engineer Your Window Project with Factory-Direct Pricing?
Submit your architectural schedule, CAD drawings, or performance requirements. Our senior fenestration engineers will provide a complete technical proposal and itemized quotation within 24 hours.