FAQ

Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) is a recognized Top 10 direct manufacturer with more than 25 years of specialized expertise in high-performance door systems. Operating out of our 180,000 square meter intelligent industrial park in Foshan, Guangdong, China, our factory is powered by more than 600 skilled technicians, CNC profile machining lines, and automated coating workshops.

By bypassing third-party export brokers, DERCHI provides project developers and wholesale distributors with direct factory pricing, absolute lead time oversight, unified material traceability, and fully customized OEM/ODM architectural production.

Our production portfolio is engineered specifically for upscale residential estates, modern compounds, and five-star commercial hospitality venues:

• Luxury Aluminum Entry Doors: Heavy-duty, thermally broken entrance systems with contemporary flush or glazed aesthetics.
• Cast Aluminum Pivot Doors: Palace-grade sculpted 3D relief doors offering unmatched impact resistance and Arabesque or modern geometric patterns.
• Marine-Grade Stainless Steel Doors: Maximum-security entrances utilizing anti-corrosive stainless alloys built to resist marine exposure and humidity.
• Architectural Glass Entry Doors: Oversized pivot and swing systems featuring multi-laminated low-E solar control safety glass.
• Interior Acoustic Wooden Doors & Automatic Garage Doors: Soundproof solid wood flush doors and insulated overhead sectional garage door systems for unified project sourcing.

Doors manufactured for Middle Eastern sites like Dubai, Riyadh, Doha, and Kuwait City incorporate dedicated climate-protection systems:

• Polyamide Thermal Barriers: Multichamber thermal breaks interrupt radiant solar heat transfer, preventing door leaves from bowing or transmitting heat indoors.
• UV-Resistant Surface Treatments: Automotive-grade fluorocarbon (PVDF) and architectural powder coatings ensure decades of color stability without chalking or peeling under intense UV exposure.
• Aero-Grade Polyurethane Cores: Fire-retardant, high-density insulating cores keep indoor air-conditioning loads low while maintaining structural rigidity.

We deploy continuous automotive-grade multi-layer EPDM vulcanized rubber gaskets across frame perimeters and meeting stiles. Paired with concealed automatic drop-down mechanical drop seals at the threshold, our doors achieve complete airtightness, preventing fine dust, windborne sand, and pressurized rainwater from bypassing the seal during severe shamal dust storms.

Because every villa and commercial tower has bespoke structural dimensions, our quotation process is engineered for exact budget control. To receive a transparent commercial proposal within 24 hours, please email [email protected] with:

• Architectural Schedules: CAD drawings, rough opening dimensions (width x height), wall thicknesses, and door swing directions.
• Material & Profile Selection: Preferred material (aluminum, cast aluminum, stainless steel), panel design codes, and color finish preferences.
• Glazing & Performance Requirements: Acoustic STC rating, insulated double/triple low-E glass, or opaque decorative inserts.
• Hardware & Access Controls: Mechanical multi-point security locks, biometric fingerprint handles, magnetic strikes, or motorized concealed pivots.

Yes. Every confirmed project is assigned to a dedicated bilingual façade engineer. We supply full structural CAD shop drawings detailing profile cross-sections, thermal breaks, threshold drainage, anchor bracket placements, and sub-frame connection details. Production only begins after consultant and contractor drawing sign-off.

Standard architectural production cycles average 25 to 35 working days following technical drawing sign-off and deposit receipt. For complex oversized pivot systems or high-volume multi-villa tenders, our factory plans phased production batches to align directly with your site concrete schedules.

Sea freight transit from our factory to major ports such as Jebel Ali (Dubai), Dammam, Jeddah, Hamad (Qatar), and Shuwaikh (Kuwait) generally requires 15 to 22 days, with complete customs export documentation handled by our logistics desk.

Guangdong Dejiyoupin Doors and Windows Co., Ltd. holds 8 major international certifications and over 30 proprietary technology patents. Our products have undergone rigorous third-party testing to comply with:

• CE & ISO 9001: European safety standards and certified quality management systems.
• AS 2047 N6: Australia's highest standard for structural wind load resistance, water penetration, and air infiltration.
• UL Fire-Rated Certifications: Documented fire-containment performance for commercial corridors, hotel suites, and residential boundaries.

Every shipment is covered by our comprehensive 10-year quality assurance warranty covering structural door leaf geometry, internal framing integrity, and surface coating adherence against peeling or fading.

Post-delivery support includes bilingual English installation manuals, step-by-step 3D video tutorials, round-the-clock remote video engineering consultations, and the option for dispatching on-site installation guidance engineers for major commercial developments.