WhO is a name of wallpaper brand which has been developed and made in Japan since 2015. The name of WhO comes from "Who are you?". The question means whose space?, whose design?, whom is it used?, for whom? WhO is the material which would respond to these questions and would inspire the free imagination. WhO is the brand of wallpaper for people asking for new expression of space,more beautiful, more be loved. CAL. CO., Ltd., the manufacturer of high quality graphic signs has planned and developed the brand of WhO with graf, the design unit in various fields, interior design, product design and art directions.