1, Smyth glasses lenses are very easy to use, and the frame structure and performance are good, not only cheap, but also cheap, which is a little more cost-effective than Changle Ai Shi glasses.

2. Shi Ming glasses have anti-blue technology, and they are not tired after wearing for a long time. Because of its excellent wear resistance, good optical characteristics and long service life, the sales volume far exceeds that of Changle Aishi glasses.