... manganese ore, grinding and sieving to various kind of manganese sand filter media. Rough appearance, brown color, can remove ... and is now widely used in petroleum, chemical, textile, paper and electronic industries, as well as urban residents of ... Anthracite Filter Media,Walnut Shell Filter,Manganese Sand Filter,Quartz Fiter Sand,Ceramic Filter Sand,Biological Particulate Filters. For more details, ...