Floor-to-Ceiling Slim Sliding Glass System
- Six-Panel Integrated Screen Mesh
- Full-Height Tempered Safety Glass
Product Inventory
Factory-Direct Aluminum Fenestration & Entrance Systems
Engineered to international standards including CE, AS 2047, and ISO 9001. Manufactured at our 180,000 m² Foshan production facility for developers, distributors, and general contractors worldwide.
Industrial Heat-Insulated ACP System
- 3mm/4mm High-Tensile Composite
- A2/B1 Rated Fire Retardancy
Aluminium Sliding Stained Glass Enclosures
- Obscure Decorative Glazing
- Moisture-Resistant Track Bearings
6063-T5 Architectural Extruded Profiles
- Silver Anodized & Powder Coated
- Precise Dimensional Tolerances
Insulated Aluminum Casement French Doors
- Thermal-Break Heavy Sash Structure
- Multi-Point Compression Seal
Thermal-Break High-Efficiency Casement
- Double/Triple Insulated Glazing
- Passive House Thermal Metric
Top-Hung Awning Bathroom Ventilation
- Integrated Stainless Flyscreen Mesh
- Rain-Deflecting Awning Hinge
Luxury Fire-Prevent Exterior Pivot Enclosure
- UL Certified Fire-Resistant Core
- Heavy-Duty Floor Pivot Hardware
Engineering Whitepaper
Material Science of Bathroom Aluminum Fenestration
Bathroom environments represent one of the most demanding physical envelopes in residential and commercial architecture. Fenestration systems must simultaneously withstand perpetual internal relative humidity reaching up to 100%, severe thermal differentials across internal and external building skins, chemical exposure from detergents and aerosols, and stringent building-code demands for privacy and mandatory ventilation air changes.
Alloy Metallurgy (6063-T5/T6)
DERCHI implements virgin architectural billet alloys containing strictly calibrated magnesium-silicon ratios (0.45–0.9% Mg, 0.2–0.6% Si). This ensures an ultimate tensile strength exceeding 205 MPa while eliminating intergranular stress cracking caused by saturated chlorine and alkaline cleaners commonly encountered in institutional and luxury master bathrooms.
Polyamide Thermal Barriers
Condensation on interior window profiles leads to microbial mold formation and framing degradation. DERCHI integrates 24mm to 34mm multi-chambered polyamide (PA66 GF25) reinforced with 25% glass fiber. This delivers frame U-factors as low as 1.4 W/m²·K, fully isolating indoor humidity from external climatic extremes down to -30°C.
Corrosion Surface Passivation
Every extrusion undergoes a chemical pretreatment converting free aluminum into a passivated chromate or non-chrome nano-ceramic conversion layer, followed by Qualicoat Class 2 certified fluoropolymer (PVDF) powder coating. This provides salt-spray resistance exceeding 3,000 hours under ASTM B117 testing, critical for both humid interiors and coastal oceanfronts.
Industry Horizon
Future Procurement Trends in Architectural Fenestration
Global procurement metrics are shifting rapidly from basic price-per-square-meter calculations to whole-life cycle cost assessments, carbon accounting, and building envelope integration.
Dynamic Electrochromic & PDLC Glazing
Architects are eliminating dusty, unhygienic fabric blinds in luxury hospitality. Procurement contracts increasingly mandate smart polymer dispersed liquid crystal (PDLC) switchable glass. DERCHI embeds low-voltage (24V/48V) dynamic interlayer glass that switches from optical transparency to opaque frosted state in under 20 milliseconds via wall switch or home automation protocols.
Automated Aerodynamic Ventilation
Building codes throughout North America (ASHRAE 62.2) and Europe (EN 13141) strictly govern passive ventilation. Emerging procurement focuses on top-hung and tilt-and-turn sashes fitted with concealed, waterproof DC linear actuators linked to environmental humidity sensors, expelling vapor automatically without sacrificing physical perimeter security.
Supply Chain Decarbonization & Circularity
General contractors face stringent LEED v4.1 and BREEAM sustainability targets. DERCHI supports overseas developers by utilizing hydro-powered green aluminum extrusions with up to 40% post-consumer recycled billet, accompanied by detailed Environmental Product Declarations (EPD) that streamline local commercial project sign-offs.
Technical Evaluation
Bathroom Window Typology Matrix for Architectural Specifiers
Compare standard operating typologies to determine structural load ratings, mandatory clearances, air tightness, and ventilation efficiency for high-moisture spaces.
| Fenestration Typology | Water Tightness (Pa) | Acoustic Attenuation | Primary Application Matrix | Specifier Engineering Advice |
|---|---|---|---|---|
| Top-Hung Awning Window | Class 9A (≥ 600 Pa) | Rw 38 dB – 42 dB | High-rise residential bathrooms, hotels, coastal villas | Recommended Outward-opening sash sheds wind-driven rain during ventilation; ideal over vanities and soaking tubs. |
| European Tilt-and-Turn | Class E900 (≥ 900 Pa) | Rw 42 dB – 46 dB | Cold-climate residences, passive houses, luxury apartments | Offers dual-mode micro-ventilation at the top while permitting 90-degree turn for safe interior cleaning of external glass surfaces. |
| Slim-Line Sliding Window | Class 6A (250 Pa – 300 Pa) | Rw 32 dB – 36 dB | Space-constrained powder rooms, walk-in ensuites | Requires concealed drainage tracks with integrated silicone one-way flap valves to prevent internal water backflow during driving storms. |
| Architectural Fixed Glass | Class E1200 (≥ 1200 Pa) | Rw 45 dB – 50 dB | Spa retreats, private master suites facing courtyards | Zero air infiltration. Best paired with mechanical HRV ducting. Maximizes natural lumens while utilizing obscure fluted or acid-etched glass. |
Enterprise Pedigree
Why Tier-1 Global Contractors Partner with DERCHI
Operating as the export division of Guangdong Dejiyoupin Doors and Windows Co., Ltd., DERCHI brings over 25 years of engineering mastery to commercial and custom residential projects across the United States, Canada, Australia, and Southeast Asia.
180,000 m² Automated Manufacturing
Our expansive industrial complex in Shishan Town, Foshan, features four-axis CNC dual-head precision cutting equipment, automated corner-crimping cells, and temperature-controlled curing chambers. This extensive capacity eliminates manufacturing bottlenecks, ensuring scalable volume delivery for multi-unit hospitality and residential towers.
Stringent Multi-Standard Certification
DERCHI products do not just satisfy domestic benchmarks; they are independently verified under American NFRC thermal standards, Australian AS 2047 cyclonic N6 design pressure parameters, European CE EN 14351-1, and UL fire ratings. Every delivery includes full mill certification sheets and traceable testing dossiers.
Engineered Submittal & Shop Drawings
We eliminate cross-border engineering ambiguity. Our in-house technical team of structural engineers drafts free, comprehensive 2D CAD and 3D BIM shop drawings matched to your architectural schedules, rough openings, structural embedment details, and flashing interfaces before fabrication starts.
Commercial Q&A
Frequently Asked Questions on Sourcing from China
Crucial commercial, technical, and freight parameters addressed for supply chain directors, cost estimators, and project architects.
How do you ensure zero water infiltration in moisture-dense bathrooms?
We incorporate three-tier continuous EPDM perimeter weatherseals, vulcanized corner joints, and pressure-equalized drainage systems. Frame corners are joined using cast-aluminum alignment chevrons injected with two-part polyurethane structural corner adhesive, preventing microscopic gap expansion under structural flexure.
What obscure glazing treatments satisfy strict residential privacy codes?
We provide acid-etched obscure glass, ceramic fritted patterns, fluted/reeded textured surfaces, and smart PDLC privacy switchable glass. All privacy panels are built using dual-pane tempered safety glass (ANSI Z97.1 and EN 12150-1 certified) with warm-edge spacers to eliminate internal perimeter condensation.
Can you manufacture to custom rough openings and imperial schedules?
Yes. We engineer 100% bespoke window assemblies according to either imperial (inches/feet) or metric rough openings. Our engineering department verifies rough openings, structural anchoring points, bucking details, and perimeter flashing allowances on detailed shop drawings prior to extrusion cutting.
What are your typical production lead times and ocean logistics packaging protocols?
Standard custom orders require 25 to 35 production days after shop drawing approval. All windows are packaged with protective PE surface film, edge corner protectors, wrapped in high-density polyethylene foam, and secured inside heat-treated, fumigated ISPM-15 plywood crates engineered for break-bulk or container ocean transit.
How does DERCHI's performance compare to leading European fenestration systems?
DERCHI incorporates European hardware components (including Siegenia, Hoppe, and G-U) matched with virgin 6063-T5 aluminum profiles and Technoform polyamide thermal breaks. This configuration yields thermal, air, and water-tightness performance metrics that rival Tier-1 European systems like Schüco at a 30% to 45% competitive factory-direct cost advantage.
Can I inspect the factory floor and evaluate automated production lines before placing an order?
Yes. We invite clients to inspect our facilities in Shishan Town, Foshan, via scheduled in-person technical visits or our 24/7 interactive 360-degree online Factory VR tour, which displays extrusion machining, assembly lines, quality testing labs, and crating operations.
Connect with an Architectural Project Specialist
Send us your window schedules, CAD elevations, or tender specifications. Our technical engineering division will review your thermal, acoustic, and aesthetic requirements to generate a complete value-engineered proposal within 24 hours.