Tostem is a brand known for its high-quality building materials and home improvement products, particularly in the field of windows and doors. Established in Japan, it focuses on creating durable and energy-efficient solutions that enhance the aesthetics and functionality of residential and commercial spaces. The company is a subsidiary of LIXIL Group, a global leader in the housing and building materials industry. Tostem emphasizes innovation and sustainability, offering a range of products that meet modern architectural needs while contributing to environmental conservation efforts.