As some companies make the identification process is used etchant is ferric chloride solution.

作为一些企业的标识制作的工艺是，用作蚀刻剂的是三氯化铁溶液。

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As some companies make the identification process is used etchant is ferric chloride solution.

作为一些企业的标识制作的工艺是，用作蚀刻剂的是三氯化铁溶液。

youdao