Everything You Need to Know About Sourcing from DERCHI
Review comprehensive answers to frequent questions asked by architects, general contractors, developers, and trade importers regarding technical engineering, OEM custom design, manufacturing schedules, quality control, and regional delivery.
Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) is an established direct manufacturing enterprise with more than 25 years of engineering experience in premium exterior and interior architectural openings.
Operating a modernized 180,000 m² manufacturing plant in Foshan, Guangdong with a dedicated workforce of over 600 skilled technicians and engineers, we manage every phase of fabrication in-house — from aluminum profile extrusion and surface treatments to precision assembly and quality inspections. We eliminate intermediaries, offering verified factory-direct wholesale pricing, guaranteed supply chain stability, and robust OEM/ODM production tailored for overseas distributors and large-scale builders.
We manufacture engineered, weather-resistant, high-security door systems engineered to endure demanding tropical and coastal climates. Our core architectural solutions include:
Aluminum Entry Doors: Heavy-duty residential and commercial pivot doors, sliding patio doors, multi-panel bifolding systems, and hurricane-rated entrance solutions.
Stainless Steel Entry Doors: High-security corrosion-resistant steel doors featuring multi-point deadbolt mechanisms engineered for perimeter resilience.
Cast Aluminum Doors: Architectural statement gates and doors incorporating intricate three-dimensional relief patterns for luxury estates and private villas.
Glass Entry Doors: Architectural minimalist entry systems combining high-impact structural safety glass with slimline aluminum framing for hotel lobbies and modern living spaces.
Complementary Openings: Acoustic interior timber flush doors and automated sectional overhead garage systems designed to consolidate project procurement.
Because commercial developments and custom residential villas require distinct structural profiles, our pricing is quoted based on exact technical schedules. To receive an itemized quote within 24 hours, provide our sales engineering team with:
1. Architectural Drawings: CAD files, elevation views, or dimensional door schedules (Width × Height).
2. Profile & Finish Requirements: Anodized, fluorocarbon powder coating, natural wood-grain transfer, or marine-grade finishes.
3. Glazing Specifications: Double or triple insulated glass, laminated safety glass, low-E coatings, or acoustic interlayers.
4. Hardware & Automation: Smart biometric access controls, multi-point lock systems, heavy-duty floor springs, or automated motorized operators.
For standard architectural configurations, production lead time typically ranges between 25 and 35 calendar days following commercial deposit confirmation and approved CAD shop drawing sign-offs.
For large-scale mixed-use tenders or complex custom oversized pivot systems, we coordinate phased batch manufacturing to synchronize shipments with your jobsite readiness. We handle container loading and export documentation directly from major regional export ports including Guangzhou and Shenzhen.
Every shipment manufactured by Guangdong Dejiyoupin Doors and Windows Co., Ltd. is backed by our comprehensive 10-year quality assurance warranty against manufacturing defects.
This warranty provides protection for structural integrity, weld and joint strength, surface finish resistance against blistering or peeling, and mechanical hardware functionality. Detailed warranty certificates and maintenance manuals are provided alongside final shipping documentation.
We provide complete technical support throughout your construction lifecycle to ensure smooth installation:
Digital Installation Guides: Comprehensive 3D exploded view manuals, wiring schematics for electronic locking, and video assembly tutorials.
Engineer Consultations: Real-time technical video sessions with our Foshan engineering staff to troubleshoot subframe anchoring, glass setting, or motor calibration.
Field Engineering Services: For large-scale resorts or multi-unit commercial developments, experienced technical supervisors can be deployed on-site upon contract arrangement.
Yes. Engineering doors for global code compliance is a cornerstone of DERCHI's manufacturing process. Our systems have been tested by accredited international third-party laboratories to meet stringent standards:
AS 2047 (Australia/NZ): Tested up to the highest N6 level for extreme cyclonic wind pressures and water penetration resistance — vital for typhoon-prone coastal Southeast Asia.
CE & ISO 9001: Certified factory quality systems ensuring strict batch-to-batch consistency and European structural safety standards.
UL Standards: Fire-rated and structural performance capabilities for commercial exit doors and high-occupancy corridors. Test reports and structural calculation packs can be submitted directly for architectural approvals.