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One of Thailand’s leading innovation-driven figures in the sanitary partition industry, Sun Boonrod Atsawasitthathorn has fundamentally redefined how restrooms are designed, maintained, and experienced.
While much of the construction industry traditionally focuses on materials or surface aesthetics, Sun—second-generation leader of the WILLY brand and Product Director of Welcraft Products Co., Ltd. chose to look deeper into the small details that many overlook, yet create long-term impact.
That overlooked detail is the space behind the toilet a critical area that is difficult to access, complex to maintain, and historically never addressed with a systematic solution.
Through hands-on experience at real project sites and firsthand exposure to maintenance challenges, Sun conceptualized Service Wall an intelligent behind-the-toilet wall system designed for easy access, simple installation, and efficient maintenance, all while preserving a refined and elegant aesthetic.
Although Service Wall was born from functional and maintenance-driven thinking, design excellence was never compromised.
The system features customizable surface finishes, allowing colors and patterns to be tailored to each project’s design language whether for luxury condominiums, high-end hotels, or premium office buildings.
This philosophy defines Service Wall:
not only must it solve real problems, it must also look refined and integrate seamlessly with any interior design concept.
As a result, Service Wall has gained recognition as the first solution of its kind in Thailand redefining the role of behind-the-toilet walls from a neglected technical zone into a core element of modern restroom design.
What was once hidden and ignored has now become a design feature and Service Wall is rapidly establishing itself as a new industry standard for restrooms in Thailand.
“I kept seeing the same problem on real project sites.
Every time a system failed, the restroom had to be closed for repairs because walls had to be broken just to access the water pipes behind them.
It wasted time and caused inconvenience, even though there should have been a better and simpler solution.”
This is how Sun Boonrod Atsawasitthathorn describes an issue he encountered repeatedly across real-world projects hotels, condominiums, and office buildings alike.
Whenever problems occurred behind the toilet system, technicians were forced to demolish tiles and decorative wall finishes simply to reach valves and pipes concealed behind the wall.
The process was not only costly, but also time-consuming and highly disruptive.
From these repeated experiences, Sun began asking a fundamental question:
“Why should a wall that looks good come at the cost of difficult maintenance?”
That question became the starting point for Service Wall a wall system that maintains a clean, refined exterior, yet can be easily opened to access critical components such as valves, water pipes, and sensors without demolishing or damaging any structure.
“Good innovation must solve real problems first not just look good.”
In the world of design, beauty without functional support often fails in real-life use over time.
Service Wall was created to challenge that notion proving that functionality and aesthetics can, and must, coexist.
Service Wall is a behind-the-toilet wall system specifically designed for maintenance and servicing purposes.
It features a strong structural design, easy installation, and a concealed access panel system allowing immediate access to internal utilities whenever needed.
Unlike conventional restroom walls, Service Wall enables maintenance work to be carried out without breaking walls or damaging finishes, making it a smarter and more sustainable solution for modern buildings.
Easy maintenance access without drilling or demolishing walls
Supports leak-detection sensors with app-based notifications
PU Foam material, designed not to release toxic pollutants in the event of combustion
Clean, seamless design that integrates effortlessly with all interior styles
Today, many leading real estate developments, hotels, and office buildings in Thailand have adopted Service Wall as part of their modern restroom systems.
By allowing quick access to valves, pipes, and sensors while preserving the visual integrity of the space, Service Wall helps:
Reduce long-term maintenance costs
Minimize downtime and restroom closures
Avoid disruption to building users during repairs
Service Wall represents a shift in thinking—from walls as static structures to walls as intelligent systems and is rapidly becoming a new standard in restroom design and facility management.
The success of Service Wall is not driven by aesthetics alone, nor by novelty in function.
It is rooted in a three-dimensional innovation mindset that Sun Boonrod Atsawasitthathorn has consistently upheld.
Design – Creating solutions that are visually refined and genuinely solve real problems
Develop – Listening to real users and continuously improving without pause
Deliver – Delivering products that perform on real project sites, not just in catalogs
“A good product shouldn’t just look good in a catalog—it must perform in real-life conditions.”
Sun Boonrod Atsawasitthathorn
Service Wall is engineered to support a wide range of architectural expressions from Modern and Minimal to Freeform Curved Wall applications.
In architecture, details are everything.
That’s why Service Wall was developed with architectural flexibility as a core principle. Beyond maintenance functionality, the system is designed to align with diverse design languages—whether it’s Modern Clean Lines, Soft Minimal Tones, or complex structural concepts such as curved walls, which are often limitations for conventional systems.
Service Wall can be manufactured with concave or convex surfaces, allowing architects to maintain design freedom without compromising on maintenance accessibility.
Surface finishes can be customized to match the primary materials of each project from marble textures in luxury hotel restrooms, to natural wood tones in wellness-oriented designs, or soft industrial looks in modern office spaces.
“We design the system to be invisible so it seamlessly blends into the architectural language of each project.”
By removing the trade-off between design integrity and maintenance efficiency, Service Wall allows architects and designers to create freely without worrying that technical systems will interrupt the visual harmony of the space.
Today, products with functions and visual characteristics similar to Service Wall are increasingly appearing in the market—clear evidence that the industry has begun to seriously recognize the importance of behind-the-toilet maintenance systems.
However, what continues to distinguish Service Wall is its deep understanding of real systems, developed through direct, hands-on experience on construction sites—not theoretical assumptions.
“What Sun created is not just a wall behind the toilet, but a maintenance system that can be installed in any building. And that is the real difference.”
While similar-looking solutions may now exist, Service Wall remains the original benchmark a system designed comprehensively from real-world insights gained from users, designers, technicians, and long-term facility operators.
This reflects a philosophy that looks beyond simply “covering a wall,” toward building a system that is ready for the future.
As the second-generation successor of Welcraft Products Co., Ltd., owner of the WILLY Toilet Partition brand that has long dominated Thailand’s market, Sun did more than inherit the business he infused it with a new DNA of innovation and development.
With formal training in Product Design from Brunel University London, one of the UK’s leading institutions in the field, Sun brings together deep design thinking and extensive real-site experience in Thailand.
This combination positions him not merely as an executive, but as a true product designer one capable of creating innovations that work in real life.
Service Wall is a clear proof point:
a solution that is well designed, highly functional, and widely adopted across major real estate developments and commercial buildings.
It is also the foundation for future innovations yet to come.
“Every space in a building should be designed to be maintainable not just usable.”
This belief explains why Service Wall is not merely a product, but a system every modern project should consider especially in an era where construction demands sustainability, aesthetics, and long-term maintenance planning.
Today, Sun Boonrod Atsawasitthathorn is recognized as one of the most compelling innovation leaders in Thailand’s sanitary and restroom design industry.
At the heart of Service Wall is not a corporate committee but the mind and hands of a designer.
Sun is not only a new-generation executive at WILLY; he is a hands-on Product Designer, personally involved in every stage of Service Wall’s creation—from observing problems on real sites to engineering systems that function reliably in everyday use.
As a designer, he integrates technical understanding with design thinking that balances function and aesthetics, guided by a philosophy that prioritizes long-term problem-solving over superficial beauty.
“I design everything myself because I know exactly where the problems are and what users truly need.”
Because of this, Service Wall is not merely an idea passed to a development team it is an original creation, born from thinking, testing, and real-world execution by a designer who understands the problem at its core.
That is what separates it from ordinary market offerings.
Today, Sun has not only continued his family’s construction-material business he has elevated WILLY Toilet Partition into a leader in Smart Bathroom Systems, driven by future-focused innovation.
Service Wall is the first product to clearly demonstrate that:
“Good design doesn’t just look good it must be capable of changing an industry.”
Designed first.
Understood first.
Built for real-world use.
Service Wall was conceived at a time when few recognized the importance of the space behind the toilet.
And even as others begin to follow, the original remains one of a kind in Thailand created by a designer whose thinking goes far beyond simply selling products.
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