Please allow me to say sorry, Cayin always tried my best to product quality.
Aluminum casing article is a relatively complex and difficult to control part, for the size does not need to worry about, but each will have a number of small differences in the appearance of the surface treatment, which may relate to the color, the surface smoothness and so on, but they did not use common C5 black, which led to more easily distinguish these differences.
Therefore, we have developed a number of templates, these templates are used in all the production process, to tell the inspectors of these issues, so that standards are unified and execution, although to pay a considerable cost.
However, a few friends from the above reply of view, this process we may still not completely controlled, please allow me to say sorry, We will again from the inspection process and to review, is that the link causing these problems, while further on suppliers and producers \ inspection personnel training.
Again sorry for the emergence of such a thing, we will do our best to improve it all.