Precipitated Silica Granule ( Silica Amorphous , Feed Additive/Stuff ) Una.100 Una.100 can be a special feed grade raw materials selected by specialized precessing . Its appearance is semi-granular, lower air pollution than Una.180E series.The heavy metal content of product comply with EU feeding stuffs regulations, non-toxic and harmless, It has large surface area and strongly absorption capability ,can be carriers and dispersant of kinds of feed additive, have good performance in transfering the kinds of water andoil into substance.