Usually we think that the better appearance is bright in the hair "black", brightness visual sense is very "thick". This macroscopic feeling is determined by the microscopic state of the plastic plating surface, which means that the microscopic surface must be very flat.
 

The coating must not have fog, very slight fog, in strong light or face is not found, to be found in a particular Angle and light, so easy to be ignored.
 

As for dew plastic, peeling, burr, pitting and deep plating defects, in electroplating is absolutely not allowed to exist.
 

Some secondary assessment parts and the reverse and other parts should have coating, and bright color, can not be black, dew plastic and a fixture to draw hair.