Maifan stone granule、Maifan stone filters material is one kind of new water treatment filters the material.The Maifan stone crevice structure is complex, the biological activity is high, has the very good adsorption and resolution capability. The Maifan stone has the high mechanical strength, large surface area, the full multi-element ionic exchange function etc, is ideal environmental protection filters material in medicine, the chemical industry, food line at present. The material. may guard against corrosion, maintain freshness, deodorizes, the decontamination, adjustment water quality, make the water quality to purify, supplement mineral substance merits ect. Widely uses in the healthcare, food, drink and the water quality purifies, domains sewage treatment, planter and cultivation. The product has the collection function as follow: filtration, the adsorption, eliminates the fungus, deodorizes, the decolorization, mineralization etc, are the good promotion product. of the quartz sand, the activated charcoal etc filter the material.