Thermal break systems, CE-certified quality and factory-direct supply for importers, builders and architects.
Guangdong Dejiyoupin Doors and Windows Co., Ltd. designs and manufactures high-end aluminum windows, aluminum doors, glass sunrooms and wooden doors under the DERCHI brand. Recognised as a "China Famous Brand" by Xinhua News Agency, we are among the leading Chinese exporters in the door and window industry.
For European importers, distributors, contractors and architects, we combine in-house R&D, intelligent production and project engineering, so your specification, drawings and compliance documents are handled by one accountable team from first sketch to installation.
Large European projects need predictable capacity. Our production base is sized to handle volume orders without compromising inspection standards.
Production Base
Annual Production Volume
R&D Engineers
Skilled Employees
Every frame is cut, machined, assembled and inspected in a controlled process, so what arrives on your European site matches the approved drawing.
Including our Four-Side Six-Point Lock invention patent for anti-burglary security.
Automated processing and multi-stage inspection from profile to packed unit.
Certified by Xinhua News Agency, a world-class media organisation.
CE (EU), NFRC (USA), AS2047 (Australia), CSA (Canada), Energy Star and ISO 9001.
From slim-frame sliding doors for Mediterranean villas to insulated casement windows for Northern European climates, every system is configurable to your project.
Thermal break casement, picture and sliding windows with double or triple glazing for energy-efficient European buildings.
View Windows
Secure entry doors, wide-span sliding doors, bifold doors and French swing doors with multi-point locking.
View DoorsInsulated aluminum front doors with multi-point locks, ideal for townhouses and villas.
DiscoverFold-away panels that open living spaces to gardens, terraces and patios.
DiscoverSlim sightlines and large glass panels for maximum daylight and views.
DiscoverClassic inward or outward opening aluminum French doors for European façades.
DiscoverAirtight sashes with tight seals, the preferred opening type across much of Europe.
DiscoverFixed large-format glazing that frames landscapes with minimal frame width.
DiscoverSpace-saving horizontal sliders for apartments, kitchens and commercial units.
DiscoverCustom aluminum conservatories and garden rooms engineered for snow and wind loads.
DiscoverSolid wood interior and exterior doors to complete whole-house packages.
DiscoverSourcing aluminium windows from outside the EU only works when performance, documentation and logistics are planned in advance. Here is how we support European buyers.
CE-certified systems backed by ISO 9001 production control, with documents your importer needs for market placement.
Thermal break profiles with polyamide insulation strips, configured to your national Uw or Ud target.
Our patented Four-Side Six-Point Lock and multi-point hardware help meet the security expectations of European homeowners.
Profile depth, drainage and glazing are specified for the site: cold-climate insulation in the north, wind and salt resistance on coasts.
Personalise colours, glass, hardware and finishes to suit heritage renovations or contemporary minimalist façades.
Reinforced crating, corner protection and container load planning reduce damage risk on long sea freight.
European buyers who share these details upfront typically receive the most accurate technical proposal on the first round, saving weeks of back-and-forth.
Factory Tour Video DERCHI specialises in the R&D and manufacture of high-end doors and windows for the global market, with proven delivery capability for both custom villas and large-scale developments.
1,000,000 m²+ annual output protects your schedule.
100+ patents from our own engineering team.
Internationally certified across five continents.
Sizes, styles and finishes made to order.
A transparent workflow designed for overseas projects, so European contractors always know what happens next and who is responsible.
We study your architectural drawings and opening schedule.
Systems are selected or developed to meet performance targets.
Detailed specification and pricing for each window and door.
Colours, glass, hardware and shop drawings are approved.
A partial deposit secures your production slot.
Final dimensions are verified to avoid installation surprises.
Manufacturing with 360° inspection before export packing.
Manuals and technical support for your local installers.
References include Hilton Hotels, Beverly Hills residences, Ruyi Lake, Emerald City and Atour Hotels, supported from drawings and R&D to site measurement and installation guidance.
Virtual Showroom AvailableSource entry doors, patio doors, windows, sunrooms and wooden interior doors from one manufacturer, with matched colours and consistent quality.
Unique products developed for your brand or project.
Coordinated packages for villas and developments.
Colours, logos, glass, hardware and finishes.
Distributors, showrooms and contractors grow with a manufacturer that supports them with data-driven product selection, marketing material and technical training.
United Kingdom 
France 
Italy 
Switzerland 
Factory: Foshan, China Partner showrooms let homeowners see, touch and test DERCHI windows and doors before they buy.
Real feedback from importers, contractors and homeowners who installed DERCHI products.
Over 100 national patents, including the exclusive Four-Side Six-Point Lock invention patent, plus hurricane certification and recognised international standards.
Clear answers on compliance, energy performance, shipping and partnership, written by our export engineering team.
More FAQsSend us your drawings and performance targets. Our export engineers will review your project and recommend the right aluminum systems.
[email protected]