TOSTEM is a pioneering brand of aluminum doors and windows from Japan. Inheriting Japan's craftmanship and industrial precision, TOSTEM delivers aluminum doors and windows with cutting-edge innovations for diverse housing needs and everyday living. TOSTEM's commitment to Connecting Spaces of Living responds to the demand to fulfil contemporary home design for better living and harmony with nature.

TOSTEM's flagship series, GRANTS Corner Sliding Door, is one of the innovations that highlights the beauty of living in harmony with nature. Corner Sliding Door is designed to blur the boundaries of the inside and outside and bring seamless harmony. With precision engineering, Corner Sliding Door is the ideal solution for home that prioritize an unobstructed panoramic view by fully opening the corner area of a living space.

Emphasizing innovations and technology for the comfort of living, ATIS provides premium products including Tilt & Slide and Awning Window. Tilt & Slide is optimized for family-friendly usage and safety which also features an insect screen that is highly transparent yet performs optimally. ATIS insect screen is engineered to be denser and slimmer than conventional mesh. The high-density and minimal-profile screen ensures complete insect protection while maintaining ideal airflow and an uninterrupted view. ATIS Awning Window also incorporate the latest innovations that enable smooth and effortless operation without the need to adjust the insect screen.

As a commitment towards sustainability, TOSTEM also introduces PremiAL R100, Japan's first 100% recycled aluminum building material. Using PremiAL R100 can reduce carbon emissions by up to 80% compared to smelting new aluminum ingots.

TOSTEM offers Total Housing Solution through a variety of products including GIESTA AirFlow, a high-performance steel door with a timber finish featuring AirFlow windows and insect screen. The integration of this door with other TOSTEM products ensures superior performance in wind pressure resistance, water and air tightness, and acoustic insulation, delivering optimal comfort of your living space.

These signature products will be showcased at the TOSTEM Pavilion as part of IndoBuildTech Surabaya 2025. Visitors are encouraged to experience TOSTEM's advanced features firsthand and take advantage of exclusive offers for every product order placed during the exhibition.

TOSTEM invites all professionals from the construction and design industries to visit TOSTEM Pavilion at IndoBuildTech Surabaya 2025 from 17 to 21 September 2025 at Grand City Convex. For more information about TOSTEM, please visit @tostemindonesia. You can find us at:

TOSTEM Pavilion at IndoBuildTech
Grand City Convex, Surabaya
Booth: A-3A