Global Vision, Precision Engineering
Guangdong Dejiyoupin Doors and Windows Co., Ltd. (operating globally under the brand DERCHI) is a premier manufacturer specializing in the research, design, and fabrication of high-performance architectural entry doors, large pivot doors, and custom facade systems.
Headquartered in Shishan Town, Foshan — the epicenter of high-end aluminum engineering in China — we operate a modern 180,000㎡ industrial complex. With an annual capacity surpassing 1,000,000㎡, our operations are optimized to fulfill large-scale architectural projects, villa developments, and commercial properties worldwide.
Our multidisciplinary team of over 600 professionals works in tight alignment across technical consultation, structural calculations, digital CAD prototyping, precision CNC manufacturing, and rigorous quality assurance.
Why Global Contractors Partner With DERCHI
From coastal residences facing extreme marine humidity to modern high-rises demanding strict thermal and wind resistance, our systems are built for enduring integrity.
Unmatched Capacity
Our automated profile extrusion, processing lines, and intelligent warehouse infrastructure guarantee strict lead times even for large commercial volume runs.
Innovation-Driven R&D
Holding more than 30 proprietary technology and industrial design patents, our engineers continually optimize pivot load hinges, multi-point locks, and thermal breaks.
International Certification
Every product is certified to international standards including CE, AS2047, and ISO9001, providing tested proof of air tightness, water tightness, and structural wind resistance.
Full Architectural Customization
Engineered precisely to project parameters. Custom heights up to 6 meters, bespoke fluorocarbon finishes, smart biometric locks, and integrated glazing units.
Export Crated Reliability
Standardized heavy-duty seaworthy crating ensures doors arrive blemish-free at major international ports across South America and beyond.
Dedicated Technical Support
Our sales engineers communicate across target time zones, providing shop drawings, load calculations, and real-time installation guidance.
Advanced Production Lines & Quality Control
Integrated fabrication across 6 specialized glazing lines, 5 smart warehousing complexes, and automated thermal-break profile processing.
R&D Testing Center
In-house laboratories conduct continuous acoustic, wind pressure, water penetration, and cycle-life stress tests.
38-Point Quality Inspection
168 controlled manufacturing steps with 38 mandatory quality checkpoints from raw ingot to final packaging.
Automated Assembly
Eight computerized assembly lines guarantee dimensional accuracy down to fractions of a millimeter.
German Thermal Technology
Automated polyamide strip insertion machinery ensures optimal structural insulation and zero thermal bridge defects.
Engineered on Four Foundation Pillars
Our operational ethos unites craftsmanship, modern robotics, and accountability across every overseas shipment.
Skilled Workforce
Over 600 dedicated production technicians, CAD detailers, and project managers committed to total delivery precision.
Vertical Integration
From aluminum alloy ingot casting and extrusion down to high-precision hardware assembly and sea-safe crating.
Unyielding Quality
Tested resistance against coastal sea air, tropical UV, and severe climatic fluctuations without fading or warping.
Global Benchmarks
Setting the industry benchmark for aesthetics, thermal performance, and physical perimeter protection.
Trusted Partner in 100+ Countries
With over 700 partner stores and more than 100,000 successful projects delivered globally, Guangdong Dejiyoupin Doors and Windows Co., Ltd. is proud to be a reliable supplier for developers, builders, and distributors internationally.
