Optical products include sunglasses, reading glasses and optical. Well, the material composing them have handmade acetate, stainless steel, titanium, TR90, Ultem, PC, CP, and normal metal. Each kind of material has it’s specific production process, can’t be replaced by other, which makes different price among them.

But, how about the lens? Regarding sunglasses and reading glasses, lens must have good quality to ensure a good function to correct people’s vision.

-Sunglasses: The lens includes TAC polarized, very popular high level lens quality, and other lens finished by injection like PC, CR39, AC, Nylon etc.

-Reading glasses: It is also called presbyopia glasses and need precise lens strength to correct old group’s vision.