INAX (株式会社INAX, Kabushiki gaisha Inakkusu) is one of the major Lixil companies.

The company was formed in 2011 by the merger of Tostem Corp. (a supplier of building materials), INAX (manufacturer of toilets and bathtubs), Shin Nikkei (maker of materials for skyscrapers), Sunwave (a kitchen company) and Toyo Exterior (manufacturer of gates and fences).

[3] In the same year Lixil bought Permasteelisa, an Italian developer of curtain walls, for €575 million.

[citation needed] On 6 November 2018, LIXIL announced a new partnership with the Bill & Melinda Gates Foundation to bring what could be the world's first "reinvented toilet" for household use to pilot in at least two markets.

These products are marketed in various countries with plumbing infrastructure deficiencies, including Bangladesh, Uganda, Kenya, Haiti and India as of 2018.