| http://www.w3.org/ns/prov#value | - In the method of the present invention, as it is obvious in Tables 1 and 2, by accommodating a member including metal in a hermetically sealed manner together with a rust-proof agent packet in a gas-impermeable container, oxygen, moisture and corrosive substances in the preservation container are absorbed by the rust-proof agent, and reductive substances are generated due to oxygen absorption reac
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