Engineered Fenestration Portfolio
Standard & Custom Architectural Window & Door Systems
Manufactured directly from our 180,000 m² smart production base in Foshan under ISO 9001 quality management systems. Our high-performance aluminium systems feature advanced multi-chamber thermal breaks, airtight weatherstripping seals, and heavy-duty sliding counterbalances tailored to Romania's four-season climate.
Localised Engineering Analysis
Precision Fenestration for Romania's Diverse Built Environment
Romania's climate zones transition from continental interior extremes with freezing sub-zero winters to humid, high-salinity summer conditions along the Black Sea coastline. Our OEM/ODM sliding sash aluminium systems are engineered specifically to overcome these environmental stress factors while respecting regional architectural typologies.
Bucharest Urban Heritage Renovations
Historical central quarters (Centrul Vechi, Dorobanți, Cotroceni) demand strict preservation of neoclassical and Art Deco facade fenestration lines. Our vertical sliding sash profiles integrate slim sightline frames (down to 48mm), sculptured sash horns, and custom multi-lite georgian bars, preserving authenticity while integrating Uw ≤ 1.1 W/(m²·K) acoustic and thermal cores.
Acoustic Attenuation: Rw up to 42 dB
Black Sea Coastal Resorts (Constanța & Mamaia)
Constanța, Mamaia, and Mangalia subject buildings to salt spray, sand scouring, and gale-force coastal winds. Our marine-grade aluminium extrusions utilize Qualicoat Seaside-grade electrostatically applied polyester powder coating or 25-micron architectural anodisation, paired with 316 marine-grade stainless steel spiral balances and concealed multi-point sash interlocks.
Corrosion: 1,000+ Hr Neutral Salt Spray
Carpathian Mountain Luxury Chalets (Brașov & Sinaia)
High-altitude mountain retreats in the Prahova Valley experience intense snowfall and winter temperatures dropping below -25°C. We implement polyamide PA66 GF25 thermal breaks up to 34mm, combined with triple-glazed warm-edge argon units, ensuring zero interior condensation and structural stability under high snow load windward drafts.
Wind Load Resistance: EN 12210 Class C5
Modern Mixed-Use Towers (Cluj & Timișoara)
Rapid commercial hub expansion in Transylvania and Banat calls for automated ventilation systems and streamlined curtain-wall integrated sliding sash formats. DERCHI OEM services deliver concealed motorized actuators compatible with European KNX and BACnet building management frameworks.
Smart Building BMS & Actuator Ready
Strategic Market Evolution
Fenestration Trends & Regulatory Alignment in Romania
The Romanian construction market is undergoing a profound qualitative pivot driven by European Union environmental directives and local building revisions. Historically dominated by lower-end uPVC systems, residential and commercial developers are increasingly specifying architectural aluminium sliding sash windows due to their structural longevity, 100% recyclability, and capability to support larger structural glass spans without profile sagging.
1. nZEB (nearly Zero-Energy Buildings) Mandate: In accordance with Romanian Law no. 372/2005 (republished in 2020) and technical norm MC 001/2022, all new building permit applications must fulfill strict overall energy performance thresholds. Our custom-engineered thermally broken sash systems effortlessly hit whole-window thermal transmittance figures below 0.95 W/(m²·K) when specified with high-efficiency triple glazing.
2. Shift to Minimalism & Maximum Daylight: Romanian architects are increasingly favouring narrower profile faces to enhance natural daylighting ratios in multi-family apartments and private villas. Unlike conventional PVC sliding frames which require substantial bulk to resist wind deflection, our 6063-T6 alloy frames achieve maximum windload resilience with up to 35% slimmer visible sightlines.
| Technical Verification: Romanian Standard Compliance | |
|---|---|
| Thermal Performance | EN ISO 10077-1/2: Whole window Uw ≤ 0.95 – 1.2 W/(m²·K) |
| Air Permeability | EN 12207: Class 4 (600 Pa maximum airtight seal) |
| Water Tightness | EN 12208: Class 9A / E1050 (Driving rain protection) |
| Resistance to Wind Load | EN 12210: Class C4 / C5 (Structural wind deflections) |
| Acoustic Insulation | EN ISO 717-1: Rw (C; Ctr) = 38 (−1; −4) dB to 44 dB |
| Alloy Specification | High-purity 6063-T6 architectural aluminium extrusion |
| Surface Durability | Qualicoat Class 2 / Anodised EN ISO 7599 (20-25 μm) |
180,000 m² Direct Manufacturing Facility
Foshan, Guangdong · Fully Integrated Extrusion, CNC Milling & Dual-Seal Assembly Lines
Foshan, Guangdong · Fully Integrated Extrusion, CNC Milling & Dual-Seal Assembly Lines
Enterprise Capabilities
Manufacturing Excellence Backed by 25+ Years of Mastery
Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) stands as an industry-recognized top-tier manufacturer. Operating an expansive modern facility in Foshan, China, our specialized vertical sliding sash division provides seamless, factory-direct OEM/ODM partnerships for general contractors, facade fabricators, and fenestration distributors across Romania.
We handle everything in-house: profile engineering, high-precision thermal bridge rolling, precision 45/90-degree CNC cutting, automatic glass structural silicone bonding, and strict end-of-line cycle testing. By eliminating intermediaries, Romanian buyers gain complete supply chain transparency, competitive wholesale factory pricing, and certified European standard alignment.
180,000m²
Production Complex
25+
Years Experience
600+
Skilled Craftsmen
100+
Patents & Certifications
Procurement Intelligence
Frequently Asked Questions for Romanian Importers
Comprehensive operational, logistics, and technical answers addressing the key considerations of Romanian developers, architects, and procurement heads importing aluminium fenestration direct from China.
How do your sliding sash windows comply with Romanian and EU CE regulations?
All DERCHI window systems exported to the European Union comply strictly with Regulation (EU) No 305/2011 (CPR) and the harmonised standard EN 14351-1:2006+A2:2016. We supply full Declaration of Performance (DoP) dossiers, CE marking labels, and accredited third-party laboratory test certificates validating air permeability, water tightness, wind load deflection, and thermal transmittance values required by Romanian municipal building inspectors (Inspectoratul de Stat în Construcții – ISC).
What shipping routes and sea freight transit times apply to Constanța Port?
We provide full container load (FCL 20GP/40HQ) and consolidated less-than-container load (LCL) maritime freight from Shenzhen or Guangzhou ports directly to the Port of Constanța. Direct feeder and transshipment maritime services average between 28 to 35 calendar days on the water. Our logistics team handles complete export documentation, including EUR.1 / Certificate of Origin, detailed commercial invoices, packing lists, and bill of lading (B/L) to ensure smooth customs clearance in Romania.
How do you protect oversized glazed sash windows against sea transport damage?
Every window unit undergoes rigorous industrial crating: aluminium frames are cocooned in anti-scratch protective polyfilm, fitted with heavy-duty corner buffers, packed in closed export-grade fumigated solid plywood cases, and secured internally using non-marking tension strapping. Glazing surfaces feature shock-absorbing cork spacer pads. Moisture-absorbing desiccant pouches are placed in every container to completely prevent condensation fogging and hardware oxidation during long-haul sea passages.
Can you provide custom engineering shop drawings based on Romanian architectural elevations?
Yes. Our dedicated in-house engineering and drafting office provides complimentary BIM (.rvt) and CAD (.dwg) shop drawings for every project schedule. Before any fabrication begins, we produce comprehensive cross-sectional elevation plans detailing anchor bracket positions, sub-sill flashing integration, structural perimeter tolerances, and sash weight counterbalance mechanics, ensuring flawless on-site installation by your local Romanian contractors.
What balance mechanisms and hardware options are available for vertical sash operation?
We offer three distinct operational counterbalance formats: (1) Precision-tensioned heavy-duty spiral balances tested up to 50,000 continuous operation cycles; (2) Mechanical constant force spring systems calibrated specifically to exact sash glass weight; and (3) Classic lead/steel counterweight pulley configurations for historical conservation restorations. All sash locks, cam fasteners, and child-safety travel limiters are cast from heavy-duty zinc alloy or solid brass in bespoke architectural finishes (Matte Black, Brushed Nickel, Polished Brass, or RAL match).
Plan Your Romanian Fenestration Schedule with DERCHI
Send us your architectural window schedules, tender specifications, or CAD drawings. Our international engineering department will provide a comprehensive manufacturing review, Uw thermal performance assessment, and transparent CIF Constanța or DDP quote within 24 business hours.