A factory story buyers can verify.
Delburg Window & Door is a professional custom window and door manufacturer with premium German technology, fully owned by Qinyang Swan Group — a leading Chinese building material enterprise with over 30 years of manufacturing experience. Established in October 2014 in Qinyang Industrial Zone, Henan Province, we specialize in window customization, independent R&D, smart production and global window sales. As a National High-Tech Enterprise, our core products carry the U.S. NFRC energy-saving certification and are fully compliant with North American building and energy efficiency codes.
Real production context.
Documented capacity, controlled processes and export-ready packing make the factory system transparent to project buyers.
From Qinyang to 38 countries.
Founded in 2014 as the window arm of Swan Group, partnered with German engineering since 2016, exporting certified windows to 38 countries today.
Foundation
German Cooperation
Global Export
Precision manufacturing, energy-saving innovation, quality supreme.
Delburg integrates German rigorous production standards with modern green building concepts. We focus on solving the common defects of traditional windows — poor thermal insulation, insufficient soundproofing, water infiltration and low wind pressure resistance. All products are manufactured under protocols stricter than national and industry standards, serving luxury residences, villas and commercial buildings across global markets.
Factory & Infrastructure
Manufacturing base of 133,333 m² (200 mu) with 4 standardized workshops — the core system window workshop alone covers 3,600 m². Independent raw-material warehousing, intelligent production zones, QC centers, showrooms and logistics areas form a closed-loop lean system.
Human Resources
212 skilled employees including 30+ R&D technicians, 12 senior process engineers and 8 certified quality inspectors, plus 60+ specialized installation and after-sales experts and independent international trade and design teams.
Production Lines
Fully automatic German-imported precision lines for custom aluminum and resin system windows: automatic cutting, CNC milling, robotic glue-injection and corner assembly, integrated sealing and digital performance testing — full-process intelligent manufacturing.
Capacity & Output
Daily capacity of 500 m² of custom system windows, stable annual output above 150,000 m² and a designed peak of 500,000 m² — ready for large-scale overseas projects, villa customization and bulk commercial orders.
Patents & R&D
61 valid national patents and 22 industry qualification certificates covering structural optimization, high-efficiency sealing, noise-reduction structures and anti-aging innovations — supporting continuous iteration and custom technical solutions.
Certifications
Core products pass the U.S. NFRC International Energy-Saving Certification and meet North American building energy codes; National High-Tech Enterprise and Specialized & Innovative Enterprise qualifications. The 82 mm series is verified for the North American market.
PROJECT HAND-OFF
01—08
One documented route connects incoming materials, precision fabrication, inspection and protected export packing.
Each hand-off supports clearer production visibility before the shipment leaves the factory.
From profile to export packing.
Eight stages take each made-to-order system from profile intake to shipment handover. Material arrivals, machining, assembly and export packing stay visible to the project team throughout the route.
Aluminum Profiles
Profile batches are identified, checked against the project schedule and released to the production route.
Thermal Break
Polyamide thermal-break strips are prepared and joined to establish the system’s insulating core.
Machining
Profiles are cut and CNC-prepared for drainage, locks, hardware and project-specific detailing.
Assembly
Frames and sashes are assembled with seals and hardware, then checked against the production drawing.
Glazing
Specified glass units are installed with the required build-up, setting blocks and perimeter sealing.
Inspection
Dimensions, surface condition and operation are checked before the unit can move to packing.
Export Packing
Each unit receives labeling, corner protection and export-ready wrapping matched to the shipment plan.
Dispatch Handover
Final documents, packing records and shipment handover are checked before release for dispatch.
German technology cooperation
Since 2016, Delburg has maintained a long-term technical cooperation with the German Batig Group — authentic German system window design standards, precision fabrication techniques and advanced sealing technologies. More than a decade of localized innovation now adapts these standards to global climates, supported by Swan Group’s self-produced profile system for full quality traceability from raw material to finished window.
Twelve gates, each tied to a record.
Raw material certificate
Profile appearance
Cutting dimensions
Machining accuracy
Frame assembly
Drainage path
Glass configuration
Seal continuity
Hardware function
Opening operation
Surface finish
Label & packing
Built for North American and global projects.
PROJECT COVERAGE
Made-to-order window and door packages for private residences, multi-unit developments and commercial teams — planned around performance, local climate and project sequencing.
Mainstream products cover high-performance thermal-break aluminum system windows, soundproof energy-saving resin windows, tilt & turn windows, passive energy-saving windows and bespoke custom sunrooms — serving villas, residential communities, commercial plazas and offices. Delburg will keep optimizing German craftsmanship and intelligent production, focusing on high-end window markets in North America and worldwide for green construction projects.
