VCI is the short of the Volatile Corrosion Inhibitor．The Vapor stick on the metal surface，then they are oxidation and make corrosion．

VCI is a king of the rust-proof packaging material．It is aerification. They have the patent chemical which release of the invisible，odorless and non-toxic molecule in the air.

The molecule will cling on the metal surface，restrain the electrochemistry corrosion occurrence in the sealed vacuum．We can only put the metal equipment or the easy oxygenated electronic equipment，during 2-3 hours，VCI Molecule will volatilization，saturation and stick on the metal surface form the strong film to restrain the corrosion．

When we put the equipment out，VCI molecule will enter into the air，the equipment surface will clean，dry，no corrosion status, and can use at once，do not need clear．

The VCI ingredient acts on the metal surface in three ways restraining the corrosion．

Passivation the electron stream between the passive of the metal surface and the negative．

VCI molecule forms a physics water-proof layer preventing the water，humidity stick on the metal surface cause corrosion．