There is no direct correlation between the shade of sunglasses and the effectiveness of UV protection.
The anti-ultraviolet effect of sunglasses mainly depends on the material of the lens and the a...
In daily life, many people need to rely on glasses to correct vision problems, but with the arrival of summer, the sun glare, sunglasses have become an essential single product to protect the eyes ...
The first thing we need to understand is that as a daily accessory and vision correction tool, the choice of glasses is not only related to visual beauty, but also directly affects the facial propo...
China
Relevant standards: mainly based on GB 10810.3-2006 “Glasses lenses and related glasses products Part 3: Transmission specifications and measurement methods” and GB/T 14214-2003 &...
To determine whether the surface treatment process of titanium sunglasses frame is proper, you can start from the following aspects:
Observation appearance
Color uniformity: Properly processed fram...
There is no fixed standard for the replacement time of children’s glasses, and it is necessary to comprehensively judge the changes in the child’s vision, the degree of wear of the glas...
