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投稿された内容の著作権はコメントの投稿者に帰属します。
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aa123 | 投稿日時: 2019-1-29 11:13 更新日時: 2019-1-29 11:13 |
長老 登録日: 2018-11-16 居住地: 投稿数: 207 |
Re: [04] 朝日モリコロ里山 4 to patination to Engagement Rings bring about a black surface color. Patination is a film that forms on the surface of a metal due to oxidation. Gold can be treated with oxygen and sulfur-containing compounds, such as liver of 14K Gold Chain sulfur, that cause a black patina to develop. Depending on the chemical process, patination can be a thin or dense film. Patination, men watches especially a.
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