Introduction of plastic products

1. Durable, not easy to deformation and corrosion resistance
2. Anti slip
3. More portable and not easy to indentation
4. Not easy to change color

Introduction of silica gel products

1. Food grade high quality silica gel, non-toxic and harmless more safe
2. Comfortable and soft, ease the pressure on the bridge of the nose,anti-slip,anti-pressure and more invisible
3. Screw groove is specially designed to match most glasses on the market
4. Good flexibility is not easy to tear long service life