KEYSUN VCI paper is a new antirust packaging material that was produced by impregnating volatile corrosion inhibitor( VCI) on paper. It automatically volatilizes corrosion inhibition gas in normal temperature. This VCI gas adsorbs on metals surface to form molecule protection cover which can prevent matels from rust and corrosion. KEYSUN VCI Papers are environmentally safe, fully recyclable, biodegradable and non-toxic