Corofloc 341 is a kind of cationic polyacrylamide with 25-30% chare and very high molecular weight.and Corofloc 342 is a kind of cationic polyacrylamide with 25-30% chare and high molecular weight. Corofloc 352 is a kind of cationic polyacrylamide with 40% chare and very high molecular weight.