Why Choose DERCHI
For Love, We Customize a Safe Home. We place safety at the core of everything—engineering, materials, manufacturing, testing, and service—so homeowners and project teams get windows and doors that are secure, energy-efficient, and built to last.
360° Safety, Engineered End-to-End
A complete framework that turns “safety” from a slogan into measurable practice—3 Core Strengths + 6 Safety Technologies + Zero-Distance Service—covering design, production, delivery, and lifetime use.
Global Integration Powered by Industry 4.0 Scale
Scale
Intelligent Manufacturing
Global Integration
Six Safety Technologies Built for Everyday Peace of Mind
Each technology solves a real-world risk and translates into comfort, durability, and peace of mind.
Triple Sealing Structure
Layers airtightness, water-tightness, and acoustic performance to curb infiltration and noise.
Four-Sided Six-Point Lock
Interlocking frame-sash contact with six locking points to enhance anti-pry, anti-theft security.
Anti-Water & Anti-Fall Structure
Structural safeguards for extreme weather, helping prevent sash drop-off and water ingress.
Vertical Isotherm Thermal Design
Breaks thermal bridges and forms a cold-hot barrier to improve insulation and comfort.
Hardware Interior Installation
In-cavity mounting reduces thermal deformation, improves smooth operation, and extends service life.
Premium Sealing System
High-grade gasket and sealing solutions improve aging resistance and long-term leak protection.
Quality System and Compliance You Can Verify
We turn “safety” into auditable practice—from materials to final inspection—so your projects clear procurement and regulatory checks without friction.
What we certify
Coverage of major markets with CE, ISO 9001:2015, AS2047 (Australia), NFRC (US), Canada certification, and ENERGY STAR (where applicable).
Systematic evidence of capability through 100+ national patents, including signature safety inventions such as the Four-Sided Six-Point Lock.
How we control quality
Production standardized by 168 defined processes and 38 rigorous tests, enforced across the line to reduce variance and rework.
Capacity delivered by the 70,000 m² Foshan base with 4 Industry 4.0 automated lines and 4 glass lines for repeatable, large-volume builds.
What this means for you
Faster vendor qualification and smoother site inspections.
Predictable product performance across batches—critical for multi-phase developments and serialized rollouts.
Service Close to You Worldwide
We shrink service distance with local reach and always-on channels—so consultation, measurement, installation, and after-sales stay close to your jobsite.
Where we operate
Global coverage across North America, Europe, Australia, Southeast Asia, South America, the Middle East, and Africa, plus all major regions in China.
A nationwide retail and service footprint of 700+ standardized brand stores for in-person support.
How we stay responsive
Omnichannel presence (official site and mainstream digital platforms) for inquiry capture, lead qualification, and status updates.
A defined installation methodology via the Finished Delivery System, aligning tools, steps, and checklists to improve first-time pass rates and handover quality.
What this means for you
Shorter wait times, fewer handoffs, and localized accountability from pre-sale to warranty.
Research and Testing That Validate Safety
We build safety into the development cycle—prototype, validate, then scale—so designs behave as specified when they reach your site.
Validation Testing
In our Safety Testing Center, complete window units are verified in an integrated chamber for wind pressure, air tightness, and water tightness. Spray racks, water mist, pressure gauges, and live data capture are visible during the run, while an engineer in PPE monitors conditions to keep the test protocol stable and repeatable.
Scaling to Production
After validation, proven parameters are transferred to Industry 4.0 automation—CNC cutting, precision machining, or timed assembly stations. Barcodes, station QC cards, and Andon boards (can be softly blurred) signal standardized inspection gates and full traceability. The goal is to preserve validated tolerances and performance at mass-production scale.
On-Site Proof
We validate performance where it matters—on the installed project. A technician scans the interior side with a thermal camera, with the window and device screen in the same frame, showing real-time heat distribution for insulation verification. If needed, a sound meter can confirm acoustic results in noisy environments with clear readings.
Logistics & Shipping Support
We offer flexible logistics solutions across sea, land, and air to match your schedule and budget. Multiple Incoterms are available—including EXW, FOB, CIF, and DDP—so you can choose anything from factory pickup to fully managed door-to-door delivery. Our team coordinates routing, documentation, and handover milestones to keep shipments predictable and execution risk under control.
After-Sales Warranty Coverage
Our after-sales support covers four core components—glass, hardware, seals, and insulation strips. From the purchase date, each category includes up to 10 years of free repair or replacement when issues occur under normal use and are confirmed as material or manufacturing defects.
Glass
Within 10 years of purchase, free repair or replacement for self-explosion, fogging inside insulated glass, decorative bar defects, or tempered dimming defects. Coverage applies after inspection and verification.
Hardware
Within 10 years, free repair or replacement for functional failures in handles, hinges, and locks. Coverage focuses on parts that cannot operate as intended under normal use.
Seals
Within 10 years, free replacement if seals crack or age to the point they cannot perform their sealing role. Coverage applies after inspection and confirmation of the issue.
Insulation strips
Within 10 years, free replacement for natural cracking or similar failures that reduce insulation performance. Coverage applies after inspection and verification.
FAQ
What differentiates DERCHI?
A safety-first architecture: the 360° Safety System combining scale, intelligent manufacturing, patented technologies, and zero-distance service.
Which core safety technologies are applied?
Triple sealing, Four-Sided Six-Point Lock, Anti-Water & Anti-Fall for sliding windows, Vertical Isotherm thermal design, Hardware interior installation, and premium sealing.
How is quality controlled?
Industrial 4.0 lines with 168 processes and 38 tests, plus material traceability and standardized inspections.
What certifications can you provide?
CE, ISO 9001:2015, AS2047, NFRC, Canada certification, and ENERGY STAR support where relevant.
Do you support OEM/ODM and custom sizes?
Yes. Share drawings and target specs; engineering will optimize profiles, glazing, and hardware to your climate and code needs.
What lead times can I expect?
Lead time depends on system complexity and volume; your sales engineer will confirm during quotation.
