Color: this is a chemical application discipline, which pays much more attention.
For glass solder lamps, the colors commonly used in China are nothing more than bronze, black and dark brown.
The key lies in the different chemical treatment methods and different quality, which can be seen from the color.
Take bronze as an example: the closer to natural bronze, the better, and the stronger the surface texture through copper, the better.
It is worth emphasizing that there are many articles in the process of making bronze. Although they are all called bronze, they are also divided into many kinds according to different color differences. Even bronze with similar colors is divided into more than ten kinds, the price of its surface treatment is also very different.
I can only tell you a simple way to roughly distinguish bronze: 1. Observe the surface, if there are small irregular lines on the surface of the lamp body or accessories (Like real bronze)The closer you get, the better. 2.
Discoloration, observing the lamp body, found that the same accessory has different shades, indicating that the post-process processing failed to follow the steps and methods. 3.
Pantothenic acid, looking from the surface to the deep layer, found that the surface of the metal material has color spots, indicating that after copper is cleaned by acid mixed solution, the acid residue was not cleaned up, resulting in a chemical reaction with copper. From the surface, there were a little marks similar to rust. In serious cases, the lamp would be very ugly.