1)High quality bentonite. 2)Layer lines structure and unequal electricity distributing. Dioctahedral smectite has layer lines structure and unequal electricity distributing. It appears as white powder, innocuity and insipidity. It conforms with EP,BP,and CP standard.Dioctahedral smectite has strong immobility and restraining ability for the virus, germma and toxin, where are in alimentary canal. ...