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Non-chromium metal pretreatment chemicals and process
Non-chromium metal pretreatment chemicals and process
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机译:非铬金属预处理化学品和工艺
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摘要
The present invention is relates to pretreatment chemicals metal materials to be painted comprising at least one kind of sulfur-containing compounds and at least one of phosphorus ion-containing compounds, and an anticorrosive treatment of metal materials, by the pretreatment chemicals.
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