As a distinguished creator of ultra-slim windows and doors, UltraSlim redefines spatial harmony through the quiet power of minimalism. Our frames—engineered to near invisibility—recede into walls and thresholds, dissolving boundaries between interior sanctuary and the world beyond.
Born of precision craftsmanship and a European design ethos, every system we produce unites form and function in seamless balance. Expansive glass surfaces invite daylight to flow uninterrupted, framing nature not as a view, but as an extension of living space. Yet beneath this serene aesthetic lies rigorous performance: thermal efficiency, structural integrity, and resilience against the elements—all achieved without compromise to elegance.
At UltraSlim, we believe true luxury lies in what is unseen. Less is not merely a choice—it is our discipline.
Designed for minimalist purity, this series achieves maximized, unobstructed views with ultra-narrow, nearly invisible frames.
Engineered for the most demanding climates and Passive House standards, offering superior structural reinforcement and thermal integrity
Our ultra-slim windows and doors transcend conventional boundaries—both visual and technical. With a visible frame as narrow as 2 c
An aluminum-clad timber system blending the timeless warmth of authentic wood with the resilience of a high-performance, weather-resistant exterior.
The platform for unlimited architectural freedom, enabling dynamic, custom-engineered solutions including pivot doors and curved glazing.
Seamless Threshold
Recessed seamlessly into the finished floor, the SLIMLINE Concealed Track System creates a flawless zero-sightline threshold—an uninterrupted plane that erases the boundary between inside and out.
Slimline
The SLIMLINE design reduces the door panel's visible frame to just 2cm, allowing it to virtually disappear. This minimalist aesthetic accomodates oversized glass panels of up to 24m², offering truly expansive and breathtaking panoramic views.
Uncompromised Performance
Beneath the minimalist aesthetic lies uncompromised performance and strength. Crafted with aviation-grade structural integrity, the system is engineered to withstand the most demanding climates. It provides superior protection against high winds, optimal thermal insulation for year-round comfort, and a flawless watertight seal. This commitment to engineering delivers proven durability and ultimate peace of mind.
Designed for Discerning Minds, Engineered for Diverse Ambitions
From freeform curves to frameless façades, we turn radical concepts into buildable reality—backed by engineering rigor, performance validation, and seamless integration.
Consistent quality, transparent pricing, and logistics you can trust—so your schedule, budget, and reputation stay intact.
Your view, your light, your peace—tailored to your lifestyle with invisible frames, intelligent glazing, and flawless installation.
From private villas perched on coastal cliffs to urban residences redefining city skylines—discover how UltraSlim transforms architectural intent into silent, seamless reality. Each project is a testament to what happens when vision meets invisibility.
Proving technology at the absolute limits of the habitable world. Project Snapshot Location: 90 South Latitude, Antarctica Architect: Ferraro Choi And Associates Climate Profile: Extreme Cold (-73C / -100F), Severe Wind Loads Core Technology: Suspended Fi
Where architecture recedes, and nature takes the stage. Project Snapshot Location : Williamstown, Massachusetts, USA Architect : Tadao Ando (Pritzker Prize Laureate) Function : Art Gallery Conservation Center Key Design Element : The Symbiosis of Concrete
The Project: Qingdao West Coast Art Community Architect : Jean Nouvel Location : Qingdao, South Bank of Tang Dao, China. (Major coastal views, by the way.) The Vision: Zero Barriers. Zero Compromises. Look, when Jean Nouvel designs a space, he isnt just d
Reinventing the vernacular for extreme climates. Project Snapshot Location: Ordos City, Inner Mongolia Architect : China Architectural Design Research Group (CADG) Function : International Airport Terminal The Challenge : Creating a fully transparent glas
From design to installation, every step strict craftsmansjop standards to achieve the balance of purity and performance.
It combines thermal insulation, sound insulation, weatherproofing and compressive strength.
From profiles, hadrdware to assembly, all comply with international certifications.
Flexibly adapt to different building facades and construction needs to ensure that every detail is accurately implemented.
In-depth collaboration with architects, developers and construction teams to ensure that the project is implemented as before.
Behind every invisible frame is a team that refuses to compromise—and a factory where obsession with detail is standard practice. At UltraSlim, our artisans and engineers work in close concert, blending decades of European craftsmanship with cutting-edge fabrication technology.
From initial sketch to final calibration, every component is conceived, tested, and finished under one roof—ensuring absolute control over tolerances, finishes, and performance. This is not mass production. It is meticulous making: where hand-finished corners meet micron-level precision, and where “good enough” has no place in the process.
Since 1993, UltraSlim has been dedicated to the beauty of tranquil architecture.
A 20,000-square meter modern workshop, specializeding in the manufacture of silent door sills.
Capable of producing aluminum systems exceeding 500,000 square meters.
6000+ practical application cases in various industries around the world
Why the ultimate sophistication is disappearance Le Corbusier once defined architecture as the learned game, correct and magnificent, of forms assembled in the light. Today, that game has evolved. The wall is disappearing. Traditional windows were designe
Why we test our technology at the absolute limits of the habitable world. Before UltraSlim entered the private residential market, our foundational technology was validated in the harshest environment on Earth: The Amundsen-Scott South Pole Station. At 90
A minimalist window is a deception. To the eye, it appears simplea single sheet of glass held by a whisper of metal. But as the visible frame shrinks, the engineering burden grows exponentially. How do you make a 20mm frame support 800kg of glass? How do
Visit our FAQ page for more answers to your questions
A: The defining feature of our sliding doors is the minimal central interlock (the vertical bar where two panels meet). It measures just 20mm in width. This creates a virtually uninterrupted panoramic view, maximizing natural light and transparency.
A: Yes. Our system is designed for a "fully concealed" installation. The top, bottom, and side frames can be embedded into the walls, ceiling, and floor, leaving only the ultra-slim central interlock visible. This creates the stunning "floating glass" effect.
A: Absolutely. We specialize in hidden track installations, allowing your indoor flooring to flow seamlessly to the outdoor terrace without any tripping hazards. We use a specialized drainage system (concealed stainless steel tank) to ensure water flows away efficiently, even with a flat track.
A: Our heavy-duty roller system supports massive glass panels. We can manufacture sliding doors up to 9 meters high and 6 meters wide per panel. A single sash can weigh up to 800kg, allowing for truly floor-to-ceiling designs.
Visit our FAQ page for more answers to your questions.
Visit our FAQ page for more answers to your questions.
Taps into the emotional gap between aesthetic promise and lived experience—comfort, quiet, warmth.
16th Floor, Wisdom Building,990 Jianghai West Road,Wuxi City, Jiangsu 214000, China
