Discoloration Test methods
Because some customers do not know how to test lens discoloration, they left us negative feedback. we explain more to know how to test.
First:
Please put the sunglass under the sunshine keeping 10-15 seconds, then it will change color darker. (Remember it is sunshine but not cloudy or rainy)
Second:
You can use UV light to test , the lens will change darker .
Note:
Please know one thing, Do not test discoloration in cloudy weather or indoor. Since The discoloration of the lens is caused by ultraviolet radiation.
Date:
3th of April 2019
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