a. Milan Milan's function as a low-cost small green machine, it can absorb sulfur dioxide and chlorine, at the same time, can emit volatile oil has bactericidal action, these volatile oil has strong disinfectant function in the air. Placement: Usually placed in the balcony and office area. The same effect are: jasmine, osmanthus, crape myrtle, rose, rose. b. Chlorophytum Chlorophytum pot like a small air purifier, it can absorb 80% of the room of harmful substances, 86% formaldehyde; can stove, electrical appliances, plastic products emitted carbon monoxide, nitrogen oxide completely absorbed. In addition, spider plants also can be decomposed by the copiers and other harmful substances such as benzene emissions, but also with the absorption of smoking nicotine. Placement: pot, hanging in the room windowsill, balcony, air purification and can also beautify the environment. c. Ivy In a pot of ivy 24 hours of lighting conditions, can eliminate 90% of the benzene in the room, able to deal with bacteria and other harmful substances from the outside brought back, even vacuum cleaners are difficult to absorb even breathe dust may recruit nicotine. Placement: in the form of potted hanging in the office, there is abundant space level role. d. Sansevieria Sansevieria can absorb about 10 square meters in the room more than 80% of harmful gases, two basins Sansevieria can substantially completely within the general indoor air purification. Sansevieria during the day can also release a lot of oxygen. Placement: Potted mainly suitable in bright light, airy interior. e. Narcissus For air pollutants such as sulfur dioxide, carbon monoxide, carbon dioxide has a strong resistance. Placement: pot, placed in a sunny place indoors. f. Cactus Cactus plants most suitable for planting in the office, not only can absorb formaldehyde, ether and other harmful gases, and the night will absorb carbon dioxide and release oxygen, and therefore increase the fresh air and negative ions, and can reduce the damage caused by electromagnetic radiation. Placement: Small potted plants can be placed next to the window, a desk, computer.