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What are the difference between 12+2, 12+4 and 9+4?
What is the corridor? What are the difference between 12+2, 12+4 and 9+4? Corridor is…
Do you know what colors of coatings are available for optical lenses?
Coating color is an important element that optical lens buyers and suppliers pay close attention…
Do you know what types of coatings are available on optical lenses?
For optical lens factories coating is one of the key elements of a lens. Lenses…
What is the difference between SP lens and ASP lens?
This article starts by comparing spheric lenses and aspheric lenses, explaining their differences in thickness,…
Will you be joining us in January 2026?
We have continuously participated in globally renowned optical lens exhibitions. In September 2025, we participated…
What factors influence the price of optical lenses?
The price of optical lenses is determined by a variety of factors, such as index,…
How to determine if your lenses are high quality?
Currently, factories classify lenses into two grades: Grade A and Grade B. Our company just…
