Tank Core- Cote is an elastic covering, unique protection against corrosion formation in tanks. Tank Core- Cote it is formulated from an organic inorganic complex which forms the lamellar crystal structure similar blocking each other "fish scales". Plates of "the fish scales" by the nature also form a dense sticky protective layer which provides an effective barrier against air and moisture penetration. The Tank Core- Cote possesses excellent slowing down formation of a rust by properties. The same estimation is given by the independent researches .