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Welcome to TOSTEM

where quality meets innovation, and where your journey towards sustainable living begins. With over a century of wisdom, our commitment to excellence remains unwavering. As Japan's premier brand of windows and doors, TOSTEM, a proud member of the renowned LIXIL family, stands at the forefront of the industry, setting new benchmarks in both quality and sustainability.

Since our inception, we have upheld the tradition of crafting aluminum windows and doors of the highest caliber, driven by a relentless pursuit of innovation and a deep understanding of evolving lifestyles. Our history is a testament to our dedication to surpassing expectations and enhancing the comfort and performance of homes.

At TOSTEM, we recognize the urgent need to harmonize with nature while minimizing our environmental impact. Our mission is to cultivate a symbiotic relationship between humanity and the environment, ensuring a sustainable future for generations to come. Through initiatives such as CO2 emission reduction via energy-efficient windows and doors and waste material recycling,

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we actively contribute to environmental preservation.

Each TOSTEM product is meticulously designed to seamlessly blend functionality, style, and sustainability, inviting you to redefine the essence of home living. Whether you seek timeless elegance or modern sophistication, our windows and doors offer unparalleled quality and performance.

Join us on this journey towards sustainable living – welcome to TOSTEM, where quality, innovation, and over a century of wisdom converge.

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sustainability
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