copper plating of rotogravure cylinder by Janoschka
12.3 هزار بار بازدید -
11 سال پیش
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The steel base is coated
The steel base is coated with copper by means of electro-plating. The copper layer is either the material to be engraved, etched or embossed, or the basis for further coatings.
11 سال پیش
در تاریخ 1391/12/16 منتشر شده
است.
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