Quoting from Global Times: " There is a popular saying that "one out of the two people in the world wear glasses with lenses from Danyang", East China's Jiangsu Province, known as China's "capital of glasses." From the research and development of relevant technologies to the actual manufacturing and sales, Danyang is just a snapshot of multiple domestic cities and towns that have become famous for concentrated and specialized manufacturing, while supporting the global industrial and supply chain. As the world's largest lens production base and the biggest eyeglass products distribution center in Asia, Danyang currently has more than 1,600 enterprises engaged in eyewear and associated sectors, official data showed." We heard about Danyang from a friend and since it was only 15 minutes by train we went there to check it out. Not including little shops on the street, there were two large buildings filled entirely with individual shops selling g