... weight:0.947t/m3; 3.fix moisture:3%max •IntroductionAnthracite Filter MediaWe choose fine coal as raw material and ... pool, waste water. •Company OverviewFounded in 1997,Gongyi Filter Material Industry Co.,Ltd. is one of the professional ... ,Woodbased Activated Carbon,Anthracite Filter Media,Walnut Shell Filter,Manganese Sand Filter,Quartz Fiter Sand,Ceramic Filter Sand,Biological Particulate Filters. ...