Our filter media is made of “Taixi” anthracite by washing, chosen, smash, repeatedly screening and so on procedures. It has nice lustrousness, mechanical strength, resist compression, hard wearing and steady chemical activity. Also, it has some separate-absorb activity, which can absorb and disposal colour, stink, flavour and minute organism in water, and applied to filter life water, industrial water as well as municipal sewage. It is a nice material for environment protection.