Our VCI plastic zipper bags provide proven corrosion protection by VCI (vapor corrosion inhibitor) and by CCI (contact corrosion inhibitor). KPR VCI poly protects metal parts from the corrosion catalysts: water, moisture, salt, chlorides, hydrogen sulphides and other contaminants. Provides multi-metal corrosion control of metals in process, storage and transit. Long term corrosion protection for brass, copper, bronze, silver, cast iron, zinc, galvanized, aluminum and steel.