Currently there are many metal buttons on the market, but in fact today's "metal" buttons are not all metal materials, many are made of plastic, the surface of the gold plating on the coat, looks like a real metal button, almost All can be real ones.
In the department store booth, there is always a box of beautiful buttons, gold glittering silver, beautiful and luxurious. But when you hold them by hand, they are light and have no impression of texture. In fact, this beautiful "metal" button is not a metal but a plastic one. Their gold and silver coats on the surface are electroplated by chemical methods.
Metals can be electroplated, but have you seen that plastics can also be electroplated? In fact, plating metal coats onto plastics is not an easy task. Because plastic is an insulator, it is difficult for the ions to enter, and the plastic is afraid of heat, the temperature is high and it is easy to melt, and the expansion coefficient of plastic and metal is not the same. It is not possible to directly plate metal onto the surface of plastic products. After many experiments, a new type of plastic called “ABS†was finally invented. Once it hits chromic acid, the surface will be corroded, resulting in many micropores, which are called roughening in the electroplating industry.
After roughening this material, chemical methods are used to deposit stannous chloride, silver nitrate and copper sulfate into the micropores on the surface of the corroded plastic product, so that a conductive metal film is attached to the plastic surface. This can be used to electroplating nickel chrome and other metal coats on the buttons. The plastics currently suitable for electroplating are still limited to "ABS". However, I believe that in the future development, there will certainly be new types of materials put into the production of "metal" buttons, both light and metallic texture.
Want to learn more about buttons: accessible
For more details, please pay attention to WeChat public number: 
Blank Sun Visor,Black Visor Target,Best Blank Sun Visor,Blank Sun Visor For Sale
Shandong Urelia International Co., Ltd. , https://www.ureliacn.com