If the annual Shanghai International Eyewear fair is a bellwether for the industry, then the Beijing International Eyewear Fair in September is a "thermometer" to verify the product market. After the
In China, lens products have undergone four revolutions from their birth to the present. Before the 1930s, the main material in the field of optics was optical glass.
China's lens market has achieved rapid development in recent years, and there are more and more enterprises producing lenses, so the competition is more and more fierce.
If the annual Shanghai International Eyewear fair is a bellwether for the industry, then the Beijing International Eyewear Fair in September is a "thermometer" to verify the product market.
