Precipitated Silica(silicon doxide,sole making) Una.180 For sole making this type, can be packed in PP/ ... EVA bag,paper bag Precipitated Silica ( Silicon Doxide ,Sole Making ) Una.180 Una.180 is strongest rubber reinforcing agent, ... increases adhesion power which glue gives steel wire or shade fabric, reduces heat capacity of tyre face glueand ... 0.5 Precipitated silicon dioxide(carbon white,sole making)