People have worked inside the house for many centuries, but in the last few decades, the indoor environment is usually sealed completely, it becomes airy, and is full of synthetic materials, which is of gas can be chemically removed in the air. In the name of VOC, or volatile organic compounds, these chemicals are much higher in the concentration, which are present in the air of the outer city, and are known as a harmful effect on the health of people working in this environment.
In the last twenty years, it is believed that this V.O.C. in indoor plants Singapore. There is the ability to remove from indoor air, or at least reduce their concentration.