Where Discipline Meets Disappearance

Since 1993, UltraSlim has operated not as a manufacturer, but as a studio of architectural silence.

We believe a window is more than a component-it is a frame for living, a mediator between interior sanctuary and the world beyond. And like any true craft, it deserves to be made with the same devotion as a fine instrument: every line intentional, every joint invisible, every detail resolved not for cost, but for coherence.

1993 Since

Since 1993, UltraSlim has been dedicated to the beauty of tranquil architecture.

20,000 +

A 20,000-square meter modern workshop, specializeding in the manufacture of silent door sills.

500,000 +

Capable of producing aluminum systems exceeding 500,000 square meters.

Thirty Years of Unseen Work

We measure our legacy not by the volumn of our production, but by the perfection of the view. We do not just manufacture windows; we curate the silence between you and the world.

Where Discipline Meets Disappearance

Where Discipline Meets Disappearance

Since 1993, Ultra-Slim has operated not as a manufacturer, but as a studio of architectural silence.

We believe a window is more than a component-it is a frame for living, a mediator between interior sanctuary and the world beyond. And like any true craft, it deserves to be made with the same devotion as a fine instrument: every line intentional, every joint invisible, every detail resolved not for cost, but for coherence.

Our minimalism is not aesthetic reduction. It is editorial rigor-the relentless removal of all that is unnecessary, until only what is essential remains. This ethos has guided us for over three decades: a commitment to quiet excellence, where engineering serves artistry, and performance is inseparable from presence.

We do not follow trends. We refine standards.

And in a world of noise, we choose to disappear-so your vision can begin.

A Workshop of Singular Devotion

Spanning 20,000 square meters in Shanghai, our facility is not a factory in the industrial sense-but a modern atelier, purpose-built for the creation of silent thresholds.

While we possess the capacity to produce over 500,000 square meters annually, we treat every system as a discrete work: calibrated, tested, and finished with the care one would give to a limited-edition object.

While our technical mastery extends to curtain walls, skylights, and conservatories for select architectural collaborations, our commitment remains unwavering: We specialize in windows and doors-because true mastery demands focus.

This is a place where automation serves precision, not speed; where every robotic arm moves with the intent of a craftsman's hand.

A Workshop of Singular Devotion

The Science of Silence

Data is the foundation of tranquility. Three specialized laboratories work in close coordination to ensure every system is validated not just to static standards, but to the dynamic real-world experience

Performance Lab

Performance Lab

Where we test for the integrated conditions that shape comfort. Here, systems are subjected to rigorous stress tests¡ªextreme wind loads, high-pressure water ingress, and thermal transfer analysis¡ªto ensure that the sanctuary inside remains untouched by the storm outside.

Durability Lab

Durability Lab

Where we validate longevity. Materials undergo accelerated aging protocols to test their resilience against salt spray corrosion, UV degradation, and mechanical fatigue. We simulate decades of operation in weeks, proving that our "Heritage" is built to last for generations.

Sensory Lab

Sensory Lab

Where we tune the environment for human experience. This facility focuses on the invisible qualities of luxury: tuning glazing configurations to dampen specific noise frequencies and stabilizing interior temperatures, ensuring the system provides a truly silent, hermetic presence.

Thirty Years of Unseen Work

We measure our legacy not by the volumn of our production, but by the perfection of the view. We do not just manufacture windows; we curate the silence between you and the world.

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Our Mission |Engineering the Invisible Boundary

Our Mission |Engineering the Invisible Boundary

To provide architects, builders and homeowners with high-performance glazing systems that eliminate visual noise, merging the safety of the interior with the beauty of the exterior through uncompromising engineering and artisan precision.

Our Vision | The art of seamless living
Our Vision | The art of seamless living

Our Vision | The art of seamless living

We envision a future where architecture no longer separates us from nature, but connects us to it. We strive to create a world where the walls we build do not block the view, but frame the horizon—where comfort, efficiency, and aesthetics exist in perfect equilibrium.

Our Philosophy | The Discipline of Disappearance
Our Philosophy | The Discipline of Disappearance

Our Philosophy | The Discipline of Disappearance

We believe that the ultimate sophistication in technology is invisibility. We prioritize Silence: A window should be felt, not heard. We reject Compromise: High performance should never require heavy aesthetics. We value Rigor: We treat manufacturing not as industry, but as craft

Our Certificate

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Certificate 1

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Certificate 2

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Certificate 3

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Certificate 4

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Certificate 5

Global Partner

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AkzoNobel
Haida
Honeywell
Quanex
Sobinco
Technoform
Tiger

Requirement Form

Taps into the emotional gap between aesthetic promise and lived experience—comfort, quiet, warmth.

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