Tirthi, Author at Royal Tint

October 10, 2025 CorporateEnergy and EfficiencyInteriorResidencial by Tirthi 0 Comments

The Future Is Clear: How Glass Technology Will Lead the Next Wave of Architectural Innovation

Let’s cut to the chase glass is no longer just about looks. In the coming decade, it’s going to be the engine behind smart, sustainable, and agile buildings. The trends? They’re not just coming, they’re already knocking at the door.

1. Smart Glass & Switchable Film: Privacy and Efficiency in One

We’re seeing switchable glass and films move from luxury to mainstream. With a tap, glass transitions from transparent to opaque, delivering flexible privacy and energy efficiency. The impact? Hotels are swapping out curtains for smart partitions, offices are adopting flexible glass walls, and homes are integrating privacy glass into their automation systems. Smart glass technology and switchable films are now essential tools for architects and facility managers.

2. Photochromic & Electrochromic Glass: Adaptive, Energy-Saving Solutions

Photochromic and electrochromic glass is set to dominate everything from facades to skylights. These solutions automatically adjust tint and shading, reducing the need for artificial lighting and cooling. The result? Lower operational costs and a smaller carbon footprint. If energy efficiency and sustainability matter to your business, these glass options are fast becoming non-negotiable.

3. Interactive Glass Displays: Transforming Communication

Glass is evolving into a communication platform. With integrated projection and AR, storefronts can double as digital billboards, conference rooms become interactive hubs, and museums offer immersive guest experiences. Interactive glass display technology is opening new doors for branding and collaboration.

4. Sustainable & Self-Cleaning Glass: Maintenance Made Simple

Thanks to nanotech, self-cleaning glass now leverages sunlight and rain to stay spotless. Add energy-efficient coatings, and you’ve got windows that support green certifications and minimize cleaning costs. For businesses focused on sustainability and operational efficiency, this tech is a game-changer.

5. Acoustic & Safety Glass: Enhancing Comfort and Security

As urban density increases, so does the need for soundproof and secure environments. Acoustic glass and shatter resistant films are being rapidly deployed in commercial, healthcare, and residential projects, ensuring spaces are both comfortable and protected.

6. Design Meets Technology: Shaping Flexible, Premium Spaces

Modern interiors demand flexibility and minimalism. Glass is set to define both space and atmosphere through dynamic lighting, projection, and seamless smart integration. It’s no longer just a divider it’s a strategic design asset.

Over the next decade, glass technology is going to reshape architecture—delivering smarter, greener, more interactive spaces. From adaptive privacy solutions and energy-saving facades to digital displays and self-cleaning windows, the possibilities are massive.

At Royal Tint, we’re committed to driving this transformation. If you’re planning your next project and want to leverage the best in glass innovation, connect with us. The future of architecture is transparent, adaptive, and ready for business.

October 6, 2025 ArchitectureInteriorResidencialTips and Advice by Tirthi 0 Comments

How Rear Projection Film Turns Glass into Interactive Displays

Transforming Glass Into High-Impact Digital Displays

Let’s face it: in today’s hyper-competitive market, basic screens and clunky displays just don’t cut it. Customers expect innovation and sleek presentation something that grabs attention without cluttering up your space. That’s where rear projection film steps in. It’s a modern, sophisticated way to turn any glass surface into a dynamic digital display, boosting both style and function across business environments.

What Is Rear Projection Film?

Think of rear projection film as a discreet, high-tech layer you apply directly to glass or acrylic. On its own, it’s nearly invisible exactly what you want in upscale spaces. But when you combine it with a projector behind the surface, the film diffuses light perfectly, delivering crisp, high-resolution visuals right on your glass. Whether you’re running digital signage, interactive presentations, or immersive product demos, this solution elevates your brand image instantly

How Does It Work?

Here’s a streamlined view:

Film Application: The film is applied directly to your glass or acrylic panels.
Projector Placement: A projector is positioned behind the glass.
Light Diffusion: The film’s advanced layers distribute the projected light evenly no hotspots, just a clean, professional image.
Interactive Option: Integrate a touch overlay and you’ve got a full interactive touchscreen, right on your glass partition or storefront.

Why Businesses Choose Rear Projection Film

No visual clutter keep your interiors modern and open.
Supports high-definition and even 4K projection, so your content always looks its best.
Maximizes use of space no mounts, stands, or extra hardware.
Enables interactive experiences for customers and staff.
Glass remains clear and unobstructed when the display is off.

Where Does This Technology Excel?

Retail: Showcase promotions, product launches, or interactive catalogs right on your windows.
Corporate: Turn glass walls or meeting rooms into presentation powerhouses.
Events: Create next-level digital displays for branding and engagement.
Museums/Galleries: Power interactive exhibits and digital storytelling.
Hospitality & Real Estate: Use lobby glass or partition walls for up-to-date information or digital signage.

Ready to Innovate?

Rear projection film isn’t just another display it’s a strategic investment in your brand’s image and functionality. If you’re interested in exploring how this technology can elevate your business, connect with us for samples, demos, or expert consultation. Let’s turn your glass into a real business advantage.

August 10, 2025 ArchitectureCorporateEnergy and EfficiencyInteriorSustainability by Tirthi 0 Comments

How to Use Dichroic Film in Office Interiors and Facades

A Modern Solution for Color, Light, and Creativity

In the world of modern office design, architects and interior designers are constantly looking for creative materials that bring light, movement, and innovation into workspaces. One such solution is the stunning and futuristic Dichroic Film a high-impact design element that transforms any glass surface into a dynamic color-shifting feature.

If you’re looking to enhance your office interiors or façade design with light-driven aesthetics, dichroic glass film is the perfect solution.

What Is Dichroic Film?

Dichroic film is a special adhesive film that displays multiple colors depending on the viewing angle and light source. It mimics the effect of dichroic glass at a fraction of the cost and can be applied to any clear glass or acrylic surface.

The result? A mesmerizing visual transformation where glass shifts between vibrant shades like gold, aqua, violet, and magenta creating a bold, artistic, and modern feel.

Alright, here’s the thing modern offices ? They’re kind of obsessed with showing off. Everyone wants that “wow” factor. Enter dichroic film: the secret weapon for turning boring glass into something that actually makes people stop and stare. I mean, why settle for plain glass walls when you could have a rainbow disco happening every time the sun hits just right?

So, what’s this magical stuff ? Basically, it’s a sticker (yeah, I know fancy sticker, but still) that you slap onto glass or acrylic. Suddenly, you’ve got colors bouncing around like you live inside a kaleidoscope. You look at it from one angle, it’s gold. Move a bit bam, aqua, violet, magenta. It’s like the glass can’t make up its mind, and honestly, I’m here for it.

Looking to add a bold touch without overwhelming your space? Here’s your guide:

Partitions, but make them pop: Those glass dividers? Stick some dichroic film on and you’ve got yourself a moving light show. Still keeps things open but way less snooze-worthy.

Conference rooms that don’t suck: I mean, if I’m stuck in a meeting, at least let there be some cool colors shifting around. Makes it feel a bit less like a hostage situation.

Reception glow-up: Throw some on the front doors or reception windows. Instantly looks more high-tech. People walk in and go, “Whoa, these folks mean business.”

Staircases that aren’t boring: Glass railings with color shifts? Total game changer. Suddenly everyone wants to take the stairs. Maybe.

Lounges & cafés with personality: Cafeteria vibes don’t have to be beige and sad. Toss in some dichroic magic, and lunchtime just got an upgrade.

But honestly, why stop inside? Slap some of that film on the outside of the building now you’ve got sunlight turning your office into a color-shifting beacon. People will be Instagramming your office more than their lunch.

And, look, it’s not just pretty there’s practical stuff too. A lot of these films help with UV and heat, so you’re not just melting at your desk. Plus, it’s so much cheaper than real dichroic glass, and if your boss changes their mind (again), just peel it off. No harm, no foul.

So yeah, if you’re looking to make your office stand out without blowing the budget, dichroic film is kind of a no-brainer. It’s easy, it’s reversible, and honestly, it just looks cool. Why go plain when you can go full-on futuristic?

August 7, 2025 CorporateInteriorResidencial by Tirthi 0 Comments

How Rear Projection Film Transforms Glass into a Display Screen

Windows are dead. Well, not dead but just being see-through? That’s so last century. Imagine if your glass could moonlight as a digital canvas. Enter rear projection film, the secret sauce for turning plain old glass into a dynamic, shape-shifting display. It’s like giving Clark Kent glasses that actually do something.

Picture this: you slap on this high-tech, light-bending film, park a projector behind it, and presto your storefront window becomes an interactive billboard. Or your boardroom wall? Boom, it’s a presentation portal. When the show’s over, the glass goes back to doing its regular glass thing, invisible as ever. Honestly, it’s like a magic trick for grown-ups who never outgrew their love for sci-fi gadgets.

How does it work? There’s some micro-particle wizardry in the film that grabs the light and spreads it around, so even if the sun’s blasting through your window, your images are still crisp. No more battling with clunky LED screens or confusing wires. Just glass, a film, and a projector. Minimal effort. Maximum wow.

And the possibilities? Endless. Want to stop shoppers in their tracks with a digital catwalk on your window? Go for it. Want to turn your hotel lobby into a living Monet painting? Easy. Museums, exhibitions, even your living room if you’re feeling extra. It’s like your glass is auditioning for a role in Blade Runner and totally nailing it.

Why bother with this futuristic film? Because it’s space-saving, easy to retrofit, and adapts to whatever you throw at it HD, 4K, interactive doodads, you name it. Plus, it keeps your space looking sharp and uncluttered. No more eyesore screens.

So yeah, if your glass is just sitting there, being boring and transparent, maybe it’s time to give it a new gig. Your windows want in on the action. Let them shine—literally.

August 4, 2025 ArchitectureEnergy and EfficiencyInteriorSustainability by Tirthi 0 Comments

Switchable Glass in Hotels: Enhancing Guest Experience with Technology

Smart hotels aren’t just about a nice bed or fancy soaps anymore the game has changed. Privacy, tech, and that “wow” factor are front and centre, and Switchable Glass is basically the poster child for this new wave. If you’re not thinking about it for your property, you’re already a step behind the competition.

Let’s break it down. Today’s travellers expect more than a place to sleep. They want an experience something that feels both exclusive and intuitive. Switchable Glass delivers on this in spades. The tech itself is pretty impressive: using PDLC (that’s Polymer Dispersed Liquid Crystal for the tech geeks at the table), these panels jump from transparent to opaque with a simple button press or app command. We’re talking about instant adaptability, without the dust collecting hassles of blinds or outdated curtains.

But here’s why this matters from a business standpoint:

Enhanced Guest Experience = Higher Ratings

When a guest can customize their space open up the bathroom to natural light in the morning, then create total privacy with a tap they remember that. It’s the kind of detail that gets five-star reviews and word-of-mouth buzz. In luxury suites, this can mean a serious edge over the competition. People aren’t just paying for a room; they’re paying for control and comfort.

Spa & Wellness: Sell the Experience, Not Just the Service

Wellness is booming. Guests want sanctuaries, not fishbowls. Switchable Glass lets you create private treatment pods or communal areas in seconds, adapting the space to the guest’s mood or the spa’s schedule. More flexibility in design means you can maximize space usage and offer unique packages think private couples’ rooms that open into a shared relaxation zone, all with a touch.

Events & Conferences: Maximize ROI on Meeting Spaces

Business travellers and event planners demand flexibility. Meeting rooms that can shift from open, collaborative vibes to confidential, enclosed sessions without shuffling walls or reconfiguring furniture? That’s efficiency and it directly impacts how many events you can book (and how much you can charge).

Lobby & Lounge: First Impressions Matter

Your lobby’s the handshake of the hotel. Dynamic glass installations can double as digital signage, art, or privacy screens, creating a sense of innovation from the moment a guest steps in. This isn’t just about aesthetics—it’s about branding. A smart, future-ready lobby signals to guests (and potential partners) that your property is on the cutting edge.

Outdoor Spaces: Urban Advantage

For city hotels or high-rises, privacy is a big deal. Guests want the view, but not the neighbor’s curious glances. Switchable Glass dividers let in light, maintain sightlines, and offer privacy without making balconies feel boxed in or claustrophobic.

More Than Just a Gimmick: Operational Efficiency

Let’s not forget the backend. No curtains means no laundry, no maintenance calls to fix tangled blinds, no extra cleaning time. Glass is easy to sanitize huge, in today’s health-conscious world. Plus, the integration with automation and energy control systems means you can manage privacy, lighting, and even energy efficiency from a central dashboard.

Brand Value: Innovation Sells

In a crowded market, differentiation is everything. When guests see technology that’s both functional and impressive, it elevates their perception of your brand. Switchable Glass isn’t just a “nice to have” it’s a feature that positions your property as innovative, tech-savvy, and guest-focused.

In summary, investing in Switchable Glass is more than just keeping up with trends it’s about reimagining how space, privacy, and technology can work together to create memorable, marketable guest experiences. And that, in today’s hospitality landscape, is a competitive advantage you can’t afford to ignore.

July 23, 2025 Sustainability by Tirthi 0 Comments

Can Smart Glass Be Used in Skylights and Roof Windows?

Skylights and roof windows flood interiors with natural daylight but they can also bring heat, glare, and privacy concerns.

That’s why many homeowners and architects are now asking:

“Can smart glass be used in skylights and roof windows?”

Good news: Yes, it can! And it’s transforming how modern buildings manage light, privacy, and energy use.

Let’s dive into how switchable smart glass works for skylights, its benefits, and whether it’s worth the investment.

Can Smart Glass Be Installed in Skylights?

High-quality PDLC smart glass can be custom-cut and installed into skylights and roof windows. It’s used in:

Residential skylights
Atrium glass roofs
Commercial glass ceilings
Sunrooms and conservatories

Thanks to its adaptability, smart glass can be integrated into both new construction projects and some retrofit applications.

Benefits of Smart Glass in Skylights

1. Control Sunlight & Glare

Too much sunlight from a skylight can cause:

Excess heat
Annoying glare
Fading of furniture and flooring

Smart glass lets you dim the brightness while still enjoying daylight.

2. Improve Energy Efficiency

Traditional skylights can increase cooling costs because they let in heat.

Smart glass blocks:

Infrared rays (reducing heat)
UV rays (protecting interiors)

This means lower AC bills and a more comfortable indoor climate.

3. Maintain Privacy

In urban homes or offices, skylights can sometimes expose interiors to taller buildings or nearby neighbors.

Smart glass offers instant privacy without blinds or shades.

4. Modern Aesthetic

No curtains or bulky blinds
Clean, sleek look
Perfect for luxury homes and modern architecture

Smart glass makes skylights a design feature, not just a window.

✅ Is Smart Glass Durable for Roof Applications?

Yes but it’s crucial to choose high-quality smart glass designed for exterior use.

Royal Tint’s smart glass:

Withstands temperature changes
Is sealed to resist moisture
Works reliably even in skylights exposed to direct sunlight

Always use professional installation to ensure longevity.

✅ Is Smart Glass for Skylights Worth It?

If you want:

Bright daylight without heat or glare
A modern aesthetic without blinds
Privacy control in urban areas
Long-term energy savings

Smart glass skylights are absolutely worth it.

They turn a simple roof window into a high-tech, beautiful feature for your home or commercial space.

✅ Royal Tint: Your Partner in Smart Glass Skylights

At Royal Tint, we specialize in custom smart glass solutions for:

Skylights and roof windows
Residential and commercial projects
Both new builds and retrofits

Our glass meets European standards and is designed for the Indian climate.

Ready to upgrade your skylight?

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July 20, 2025 Sustainability by Tirthi 0 Comments

What Is Blackout Smart Glass and How Does It Work?

Ever wished you could block out sunlight or gain instant privacy with the touch of a button? That’s exactly what blackout smart glass delivers. It’s one of the most innovative solutions for modern interiors and is transforming how architects, businesses, and homeowners design their spaces.

In this blog, we’ll answer the top questions people search on Google, like:

What is blackout smart glass?
How does blackout glass work?
Is blackout glass better than blinds or curtains?
Where is blackout smart glass used?
How much does blackout smart glass cost?

Let’s dive in!

What Is Blackout Smart Glass?

Blackout smart glass is an advanced type of switchable glass that can instantly change from transparent to completely blacked-out (opaque) when powered on or off. Unlike regular smart glass that switches to a frosted or milky white appearance, blackout glass blocks almost all visible light for total privacy and darkness.

This technology is perfect for:

Home theaters
Bedrooms for daytime sleep
Luxury offices and conference rooms
Commercial spaces needing complete privacy
Hotels and high-end hospitality spaces

How Does Blackout Smart Glass Work?

Power On

The liquid crystals align, allowing light to pass through. The glass remains clear or lightly tinted depending on the type.

Power Off

The liquid crystals scatter, blocking light and turning the glass opaque black. This blackout effect ensures total privacy and darkness.

Some advanced blackout glass also provides:

UV protection

Heat insulation

Glare reduction

High contrast ratios (like Royal Tint’s 1:8 contrast shown in our latest products)

Benefits of Blackout Smart Glass

✅ Total Privacy on Demand
No need for blinds or curtains that collect dust or look outdated.

✅ Energy Efficiency
Helps reduce heat gain, lowering cooling costs in sunny climates.

✅ Modern Aesthetic
Creates sleek, minimalist interiors without bulky window treatments.

✅ Sun Protection
Blocks harsh sunlight and harmful UV rays, protecting interiors.

✅ Noise Reduction
Provides some acoustic insulation compared to regular glass.

Blackout Smart Glass vs. Curtains and Blinds

Many people ask:

Is blackout glass better than curtains?

While curtains and blinds can block light, they:

Collect dust and require cleaning.
Wear out over time.
Can’t be integrated with smart home systems.

Blackout smart glass offers:

Instant switching with a switch, app, or voice control.
Clean, modern look.
Durable, long-lasting solution.

Royal Tint’s Blackout PDLC Glass

At Royal Tint, we offer Blackout PDLC Glass (Dyed) featuring:

2025 patented Japanese technology
86% visibility in clear mode
Superior sun glare protection
Low energy usage

This makes it a perfect choice for projects demanding both privacy and modern elegance.

July 17, 2025 Sustainability by Tirthi 0 Comments

Switchable Glass for Bathroom Privacy: Is It Worth It?

Tired of frosted glass that’s always cloudy… or blinds that collect dust in your bathroom?

Switchable smart glass offers a modern, elegant way to control privacy in bathrooms with a simple flick of a switch. But is it worth the investment? Let’s break down the benefits, costs, and common questions homeowners and designers have when considering bathroom smart glass.

What Is Switchable Glass?

Switchable glass also called smart glass or privacy glass uses PDLC technology (Polymer Dispersed Liquid Crystal) to change from clear to frosted when powered on or off.

Power ON → Transparent
Power OFF → Opaque or frosted for privacy

This allows homeowners to enjoy natural light without compromising privacy a perfect fit for modern bathrooms.

Why Consider Switchable Glass for Bathrooms?

1. Instant Privacy On Demand

Traditional bathroom windows stay frosted 24/7 even when you’d love some sunlight. Smart glass lets you:

Keep glass clear when the bathroom isn’t in use
Turn glass opaque instantly for complete privacy

2. Modern Aesthetics

Switchable glass looks sleek and minimalist perfect for contemporary bathrooms.

No need for blinds or curtains
Clean, frameless designs
A high-end luxury vibe

3. Easy Cleaning

Unlike blinds or curtains, smart glass has no fabric or slats to trap moisture and dust.

Wipe it like any regular glass
Hygienic for wet spaces like bathrooms

4. Maximizes Natural Light

Bathrooms often feel dark and closed off. Switchable glass:

Allows daylight in when clear
Provides privacy when frosted
Makes small bathrooms feel larger and brighter

5. Customization Options

At Royal Tint, switchable glass can be:

Custom-cut for windows, shower enclosures, partitions
Integrated with smart home systems (app or voice control)
Offered in different haze levels for maximum privacy

Is Switchable Glass Worth It?

If you want:

Privacy without sacrificing natural light
A luxury, modern bathroom aesthetic
Low-maintenance, hygienic surfaces

Then switchable smart glass is absolutely worth it for bathrooms.

It’s a perfect blend of style, privacy, and innovation making your bathroom smarter, brighter, and more elegant.

Royal Tint’s Switchable Glass Solutions

At Royal Tint, we provide:

Custom switchable glass for bathroom applications
Expert installation and after-sales support
Premium-quality products made for Indian climate and usage

Ready to elevate your bathroom design?

June 28, 2025 ArchitectureCorporateInteriorResidencialSustainability by Tirthi 0 Comments

How Color Changing Films Are Revolutionizing Interior Glass Design

Interior design is evolving fast and glass is no longer just a transparent divider. With color changing films, plain glass surfaces are turning into living, breathing canvases of color and light. These films react to natural and artificial light, creating vibrant shifts in tone and reflection throughout the day. Whether it’s a modern office, luxury home, showroom, or creative workspace, color changing glass film brings visual interest, energy, and innovation into the environment.

What Are Color Changing Films?

Color changing (also known as dichroic or color shift) films are specialty architectural films applied to glass surfaces. They reflect different colors depending on the viewing angle, lighting, and time of day creating a constantly changing aesthetic that makes interiors feel alive.

Key Benefits of Using Color Changing Glass Films

✔️ Instant Visual Impact

The changing color tones instantly elevate glass walls, partitions, and doors into art pieces.

✔️ Modern and Futuristic Appeal

Great for tech offices, creative studios, or high-end retail where cutting-edge design matters.

✔️ No Need to Replace Glass

Just apply the film to existing glass—cost-effective and fast to install.

✔️ Customizable Looks

Available in various shades and finishes (soft shimmer, bold mirror effect, etc.).

Where Can Color Changing Film Be Used?

Office cabins and conference rooms
Retail stores and fashion displays
Hotel lobbies and hospitality areas
Homes – staircases, balconies, kitchen partitions
Exhibition stands and creative installations

Color changing films are not just decorative they’re transformative. In a world where design meets experience, these films offer a cost-effective, eye-catching, and innovative way to make interiors more expressive and memorable.

June 25, 2025 Sustainability by Tirthi 0 Comments

How to Maintain and Clean Switchable Glass

Switchable smart glass is a modern innovation that enhances privacy, energy efficiency, and aesthetics in homes, offices, hotels, and commercial spaces. To ensure its longevity and optimal performance, regular cleaning and maintenance are essential. In this guide, we will share expert tips on how to properly clean and maintain switchable smart glass without damaging its advanced technology.

Why Proper Maintenance of Switchable Glass is Important

- Enhances Performance – Regular cleaning helps maintain the clarity and functionality of the glass.
- Extends Lifespan – Proper care prevents scratches, dust buildup, and electrical malfunctions.
- Maintains Aesthetic Appeal – A well-maintained glass surface looks sleek and modern at all times.

Best Practices for Cleaning Switchable Glass

1. Use a Soft Microfiber Cloth

Avoid abrasive materials such as paper towels, rough cloths, or scrubbers, as they can scratch the glass surface. Instead, use a microfiber cloth to gently wipe away dust and fingerprints.

2. Use a pH-Neutral Cleaning Solution

Harsh chemicals like ammonia, bleach, or acidic cleaners can damage the protective coating and electronic layers of the smart glass. Instead, use a pH-neutral glass cleaner or a mixture of distilled water and mild dish soap.

3. Spray Cleaning Solution on the Cloth, Not the Glass

Directly spraying the cleaning solution on the switchable smart glass can lead to moisture seeping into the edges, potentially damaging the electrical components. Always apply the cleaner to the microfiber cloth first before wiping the glass.

4. Avoid Excessive Moisture and Water Exposure

Although switchable smart glass is designed for durability, excessive moisture exposure can impact its electrical function. Ensure that the cleaning cloth is damp, not soaking wet, to prevent liquid damage.

5. Clean the Glass in Circular Motions

Wiping in a circular motion ensures even cleaning and prevents streaks. Start from the center and move outward for a spotless finish.

6. Keep the Control Panel and Electrical Components Dry

If your smart glass is connected to a control panel, power supply, or remote system, avoid exposing these areas to liquid. Regularly dust the control system using a dry, soft cloth.

Additional Maintenance Tips

Inspect for Damage Regularly – Check the edges and wiring for signs of wear and tear.
Avoid Sharp Objects Near the Glass – Keep keys, jewelry, or other sharp objects away to prevent scratches.
Power Off When Not in Use – If the glass is not needed in its transparent state for extended periods, turn it off to reduce electrical strain.
Schedule Professional Inspections – If you notice flickering, uneven transparency, or responsiveness issues, consult a professional for troubleshooting and repairs.

Switchable smart glass is an investment that enhances the functionality and aesthetics of modern spaces. Proper cleaning and maintenance ensure it remains in top condition, offering long-term performance and efficiency. By following these simple yet effective care tips, you can protect your switchable glass and maximize its lifespan.

For professional maintenance services or further inquiries about switchable smart glass, contact us today

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