After 20 years of continuous development and innovation, Wanyang has developed into a leading manufacturer of granular activated carbon in China. Wanyang factory produces GACs with a variety of materials, methods and degrees of activation to produce activated carbons designed to meet and exceed the demands of a wide array of applications. GAC is basically carbon in a granular form, which is made from raw carbonaceous materials such as coconut shells or coal. In the activation process, heat is used to burn off some of the raw materials and produce microscopic pores which are capable of trapping the molecules of contaminants in water or air – so-called “adsorption”. The activated carbon is then pulverized and sieved into appropriate and uniform particle sizes. Most of organic contaminants can be treated by GAC; however, there are a small portion of organic compounds that cannot be effectively treated.