| 摘要 |
PURPOSE: A multiple color coin with metallic bonding of whole natural colors is provided to improve technology, economic value, fashionable design, commodity value, artistic value, decoration value, and product quality. CONSTITUTION: A method for manufacturing a multiple color coin with metallic bonding of whole natural colors is comprised of the steps of: manufacturing stamped original plate made of every kind of metals and precious metals in a variety of colors in order to manufacture a plurality of products; forming images on the coins or medals; coating the surface of precious metals; forming a gold-plated layer for some parts for insulation; and coloring the surface of coins or medals using every kind of natural colors.
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