PureAura is a low-cost high-efficiency air purifier designed to improve air quality in small spaces. Due to high rents, about 120,000 low-income families in Hong Kong live in separated units (SDUs) with no windows or poor air circulation. Many SDUs are less than 150 square feet in size, and the toilets and kitchens are all in the same space. Air pollution is responsible for 43% of lung cancer deaths. Children and the elderly are particularly vulnerable because they stay indoors longer. PureAura are designed according to humanitarian technical principles, are made of recycled materials, are small in size, low in construction cost, easy to maintain, and are scientifically proven to be effective. The case comes from IF official website and is only for case sharing.