1. The surface of our PC lens can under take over 1000g's scratch. while other Polycarbonate lenses can only take 600g's.
2. Strength free in the optical center of our PC lens. It is very important for your health!
3. Transmission rate of our PC lens can reach 99%.
4. Higher standard of our PC lens than International Standard. For international, the tolerance is ±0.12, we are carrying the standard less than ±0.06.