Street Furniture Design Modular Sanitation Tool Room by He Qi & Xinbo Wang The urban sanitation tool room series boasts flexibility and expansibility as composing of modular spatial elements, which can be used as a separate sanitation room with different functions or combined as a multifunctional small public area. According to feedback from the workers, the vertical space of the interior design making to improve the utilization of the room, so the sanitation tools can be placed neatly.