168 Processes & 38 QC Stages
Every frame is tracked through 168 rigorous manufacturing processes and subjected to 38 comprehensive multi-angle quality inspections, ensuring flawless tolerances across custom millwork.
Company Profile
Engineering Excellence in Architectural Windows & Doors
Guangdong Dejiyoupin Doors and Windows Co., Ltd. stands as one of the premier Chinese manufacturers and exporters in the fenestration industry. Recognized nationally as a "China Famous Brand" by world-renowned news agency Xinhua, we have spent decades engineering premium-grade thermal break aluminum windows, entrance doors, minimalist sliding systems, patio bifolds, and high-load glass sunrooms.
Engineered specifically for the demands of overseas markets, our comprehensive export program adheres to strict European standards, including CE marking under EN 14351-1, ISO 9001 certified manufacturing, and stringent thermal insulation requirements aligned with national mandates such as Germany's GEG, France's RE2020, and the UK's Building Regulations Approved Document L.
Integrated Fabrication
From aluminum extrusion machining to insulated glass assembly in our self-owned intelligent facilities.
European Code Compliance
Verified Uw/Ug thermal transmittance values, multi-point burglar resistance, and CE-ready technical documentation.
Digital Virtual Tour 
Production Capacity
Industrial Manufacturing Powerhouse
Our sprawling industrial footprint delivers predictable supply chain dependability, rapid turnaround times, and flawless quality for European commercial and residential contracts.
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Modern Production Facility
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Annual Window & Door Output
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Senior Fenestration Engineers
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Skilled Technical Workforce
Advanced Infrastructure
Intelligent Machinery & Testing Center
Precision engineering is backed by world-class automation and multi-phase inspection protocols at every phase of processing.
CNAS-Standard In-House Testing Laboratory
Independent performance verification center equipped to calibrate acoustic soundproofing, water impermeability, wind load resistance up to typhoon classifications, and structural durability before shipment.
8 Automated Production Lines
Featuring 8 internationally engineered automated assembly lines, 6 specialized structural glass fabrication lines, and 5 digital smart storage systems.
German Polyamide Strip Insertion
Equipped with 3 automated German strip insertion machines, guaranteeing exact mechanical clamping of thermal break insulation strips with zero structural deviation.
Factory Tour Video Enterprise Competence
Why European Partners Rely on Guangdong Dejiyoupin Doors and Windows Co., Ltd.
Guangdong Dejiyoupin Doors and Windows Co., Ltd. specializes in R&D, precision manufacturing, and customized export solutions for residential estates, luxury villas, and multi-unit developments.
Guaranteed Output
1,000,000 m²+ annual capacity ensures reliable delivery windows without project delays.
R&D Innovation
Over 100 patents including proprietary Four-Side Six-Point high-security locking systems.
Global Certifications
CE (EN 14351-1), NFRC, AS2047, CSA, and Energy Star certified architectural products.
Bespoke Engineering
Comprehensive customisation across RAL hues, low-E glazing units, and European hardware brands.
Whole-House Customization Full-Scope Services
End-to-End Architectural Customization
Simplify international procurement by consolidating your complete envelope package under a single, highly accountable manufacturer.
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Specialized Structural Systems
Tailored aluminum profiles engineered to meet unique wind pressure and regional thermal envelope standards.
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Private Villa & Whole-Building Packages
Unified finishes, sightlines, and performance values spanning entrance doors, sliding systems, and sunrooms.
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Configurable Hardware & Finishes
Full customization across RAL powder coatings, anodized textures, double or triple IGUs, and European security handles.
Technical Team
600+ Skilled Professionals Dedicated to Your Success
Our multidisciplinary engineering and fabrication force collaborates seamlessly across every milestone—from initial architectural drawings and shop review to automated production and international dispatch.
Partner with a Certified Manufacturing Leader
Submit your architectural drawings or project specification schedules. Our international technical sales team will deliver complete engineered proposals and quotes.
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