“○” is an adjective and a verb, a new page of design and sustainability in Taiwan.In the action guideline of “use less, use longer, know how to use, use again”, we can see the value brought by recycling design, and become the promoter of practicing sustainability; there is no end to recycling, and there is no end to sustainability, and the constant adjustment and search for solutions and promotion of education are the PLAN for recycling and sustainability in the long run.