Engineered for extreme structural wind loads, high acoustic attenuation, and superior thermal insulation. Each system is calibrated for international architectural standards across Europe, North America, Oceania, and Southeast Asia.
AS 2047 certified awning system engineered with reinforced polyamide thermal breaks, multi-point perimeter locks, and specialized friction hinges for top-hung ventilation.
Acoustic attenuation up to 42 dB. Incorporates double-gasket EPDM sealing, triple-pane Low-E insulated glass units, and heavy-duty concealed sash hinge systems.
Engineered for typhoon-prone coastal belts. Features reinforced vertical mullions, embedded stainless steel anti-derail track guides, and heavy-duty structural laminated glazing.
Cost-engineered architectural casement system offering thermal barrier profiles, warm-edge spacers, and multi-point perimeter locking for optimal residential energy metrics.
Integrated double glazing housing magnetic or motorized Venetian louvers paired with exterior extruded aluminum roller security shutters for dual solar and acoustic control.
Tested and certified under North American NFRC and Canadian CSA frameworks. Multi-chamber aluminum extrusions with argon-filled Low-E dual tempered glazing systems.
Engineered for large opening formats. Silent quad-roller mechanism with precision stainless steel track rails, high water sill barriers, and hidden weep holes for drainage.
Ultra-narrow sightline bi-fold stacking configuration. Top-hung heavy load-bearing carriage sets, inward/outward flexible folding, and fully flush threshold options for modern villas.
In architectural specifications, a CE mark is not a decorative badge—it is a mandatory legal passport under the EU Construction Products Regulation (CPR 305/2011) governed by harmonized standard EN 14351-1. Sourcing compliant fenestration requires thorough validation of declared Initial Type Testing (ITT) and Factory Production Control (FPC).
| Critical Performance Vector | Harmonized Test Standard | Technical Target Criteria | Factory Verification Status |
|---|---|---|---|
| Air Permeability | EN 1026 / EN 12207 | Class 4 (600 Pa test pressure with minimal leakage) | Certified Pass |
| Watertightness (Static & Dynamic) | EN 1027 / EN 12208 | Class E1050 (Exceeds 1050 Pa driving water resistance) | Certified Pass |
| Resistance to Wind Load | EN 12211 / EN 12210 | Class C5 (Deflection < 1/300 at 2000 Pa, safety load 3000 Pa) | Certified Pass |
| Thermal Transmittance (Uw) | EN ISO 10077-1 / 2 | Uw ≤ 1.1 W/(m²·K) with Triple Glazed Low-E & Warm Edge | Certified Pass |
| Acoustic Attenuation (Rw) | EN ISO 10140-2 / ISO 717-1 | Rw (C; Ctr) = 42 (-1; -4) dB with Acoustic PVB Lamination | Certified Pass |
| Load-Bearing Capacity of Safety Devices | EN 14608 / EN 13115 | Threshold 350 N sustained without mechanical failure | Certified Pass |
Commercial developers, general contractors, and facade consultants are rethinking fenestration procurement models. The transition from off-the-shelf assemblies to performance-engineered structural envelopes is driven by decarbonization mandates and extreme climate phenomena.
Global specifications increasingly prioritize profiles produced via low-carbon hydro-powered smelting or with over 75% post-consumer recycled content (yielding < 4.0 kg CO2e/kg Al). Third-party verified Environmental Product Declarations (EPDs) are moving from optional documentation to non-negotiable procurement qualifiers for LEED and BREEAM certifications.
While double and triple glazing have served the market well, high-rise architectural facades are migrating toward slimline Vacuum Insulated Glass units. Delivering thermal metrics as low as Ug = 0.45 W/(m²·K) at a total glass thickness under 10.3 mm, VIG reduces structural perimeter sash loads and allows for narrower mullion sightlines without sacrificing insulation.
The market is moving away from post-installation motor retrofits. Tier-1 suppliers now integrate concealed motorized chain actuators, automated ventilation dampers, multi-stage micro-vent sensors, and electrochromic dynamic solar shading directly into the thermal break extrusion profiles, fully integrated with BACnet/KNX building management systems.
The core weakness of traditional aluminum windows has always been the natural thermal conductivity of the alloy (approx. 160–200 W/m·K). Modern structural fenestration overcomes this physics limitation through precision-machined multi-cavity thermal barrier designs.
Based in Foshan, China’s industrial aluminum capital, Guangdong Dejiyoupin Doors and Windows Co., Ltd. (the manufacturer behind DERCHI) has delivered high-end architectural fenestration systems for more than 25 years. Our vertically integrated production model serves international developers, facade contractors, and global distributors with factory-direct precision.
Holding over 100 national invention and utility patents, our signature innovation includes the proprietary Four-Side Six-Point Lock mechanism. This hardware configuration engages mushroom-head steel cams on every sash face, delivering anti-crowbar security (RC2/RC3 compliant) alongside distributed gasket compression that resists typhoons.
We eliminate regulatory compliance risks for cross-border projects. Our factory holds an accredited testing portfolio covering European CE (EN 14351-1), American NFRC, Australian AS2047, Canadian CSA, Energy Star, Severe Hurricane Impact ratings, and an audited ISO 9001 quality management framework.
From architectural blueprint review, structural thermal modeling, and itemized bill-of-quantities (BOQ) generation to on-site laser measurement and job-site installation guidance, our team of 30+ dedicated R&D structural engineers ensures zero mismatch tolerances during final curtain wall or punch-window fitting.
Direct answers to the most common technical, logistics, and compliance questions raised by international procurement managers and project architects.