Air Purifier has a wide range of technology and media, enabling it to provide clean and safe air to the user. Commonly used air purification technology: adsorption, negative (positive) ions technology, catalysis, photo catalyst technology, hyper-structured light mineralization technology, HEPA high efficiency filtration, electrostatic dust collection technology; materials technologies are: Photocatalyst, activated carbon, activated carbon filter technology, synthetic fiber, HEAP high performance material, negative ion generators and so on. Many existing Air Purifier has a compound, that is, using a variety of purification techniques and materials for media.