This is the third volume of the four volume set of Comprehensive Guide for Mesoporous Materials, mainly discussing different properties and the development of mesoporous materials. Many applications for these materials have been recognized. Ultra precision methods also developed for commercialization of these materials. Like many nanostructured materials, mesoporous materials are also found in abundance in nature, such as in cell walls that are made of mesoporous membranes although they are much more complicated. During past decades in the oil industry, natural mesoporous materials known as zeolites are widely used. However, most of them are now produced artificially.