Stone is a kind of biological non-toxic, harmless and biological activity of the compound has a mineral or medicinal rocks. Often in the stone's rock, acid magmatic rocks. In addition to the common chemical constituents Ca, Mg, Si, Al, Fe, K, Na, there are a few rare element, rare earth elements, radioactive elements. Stone with adsorption, solubility, PH adjustment, biological activity and mineralization of the properties. Adsorption it free of metal ions. Stone containing about 15% Al2O3, is a typical amphoteric oxide, in aqueous solution react with a base case lower PH, PH acids react to improve the value of the function of a two-way PH adjustment. The stone had blisters , dissolution of the body and organisms can be useful for major elements K, Na, Ca, Mg, P and Si, Fe, Zn, Cu, Mo, Se, Mn, Sr, Ni, V, Co, Li, Cr, I, Ge, Ti and other trace elements. Stone in the capacity of the aqueous solution is also essential amino acids the human body. 
 Stone is mainly used in the current health care, food, beverage and water purification, sewage treatment, antiseptic, deodorant, preservation, decontamination, porcelain making and planting and breeding industry and other fields. 
 Specification: 5CM or more ,1-4CM ,4-8MM ,2-4MM ,1-2MM ,0.3-1MM ,20-40 mesh ,40-60 mesh ,60-80 mesh ,80-100 mesh, 100 mesh, 150 mesh , 200 mesh, 325 mesh, 400 mesh, 600 mesh, 800 mesh,,, and 10 × 10 × 1CM the plate. Specifications available on request to produce.