Japanese Innovation
in Window Design
in Window Design
Sleek design which fulfills the needs of modern architects without compromising on performance and reliable quality.
Sleek design which fulfills the needs of modern architects without compromising on performance and reliable quality.
50 years of performance history
Perform exactly as designed
Our unique windows come home-delivered in a box; making transportation, handling, and storage efficiency a guarantee with us
TOSTEM products are tested and certified by all major Global Standards, which ensure superior quality and consistent performance.
ASTM - American Society for Testing and Materials
American Architectural Manufacturers Association (AAMA)
Japanese Industrial Standards (JIS)
SGS System Certification ISO 9001
Thai Industrial Standards Institutes (TISI)
