(1) Three patented products: 1.7 1 lens, KR super-tough lens and PMC super-bright lens.
(2) Functional products: anti-blue lens, intelligent color-changing lens, colorful myopia sunglasses, driving polarizing lens.
(3) Multifocal products: students' reading and writing lenses, anti-fatigue lenses and progressive lenses.
(4) Ordinary products: daily general-purpose lenses.
The super tough series you mentioned is one of their patented products.