Wide pore micro-bead silica gel is milky white spherical particles, with inner structure as follows: pore volume: 0.80-110ml/g, pore diameter: 80-120A, specific surface area: 350-460m/g. This product is mainly used as catalyst and catalyst carrier for important petrochemical products including phthalic anhydride, anilne, maleic anhydride, tripolycyanamide and vinyl cyanide and is also applied in the refining of petroleum products and selective adsorption and separation of some organic gases and liquid component. It can also be used as ion-exchanger to remove multivalent harmful elements from water.