... restriction to it in packaging positions, and therefore it is not harmful to non-metal materials such as plastic, rubber, etc. ... and meets RoHS directives.Applicable Metals:It is applicable to ferrous metal, alloy steel, cast iron, copper, brass, bronze, plated metal, ... , the desiccant shall be placed within the distance where VCI is valid, and no barriers exist between the desiccant and the anticles ...