1. ANTI-REFLECTIVE: Increase transmittance so as to provide a clear field of vision.
2. ANTI-REFLECTIVE: To filter the reflected light and enhance the clarity of vision for minimizing the pressure to eyes.
3. QUALITY BEAUTY: Highlight the frame and protect the frame without distortion.
4. COSMETIC VALUE: High-end feeling to enhance the value of frame; strong attraction to maximize the sale.