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足球体育网址 Copper color protecting agent excl chromium ion and any heavy metals belongs environmental products maintain copper workpiece true qualities.

足球体育网址 Copper polish effect stable long-term, the product operation, almost no tobacco and copper polished color and full, smooth surface and very bright, and they can mirror effect.

Efficient tin removing on copper matrix and Al matrix Du no any damage and can remove copper rust enable copper matrix ...

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