Shenzhen Henggang Glasses Wholesale Market is one of the largest markets in China. In addition to lenses, other glasses products, equipment and technical services should be available. Considering the transportation cost, you can go to Henggang or Guangzhou Glasses City. But the glasses in Shenzhen are on the high side, so the price is more expensive, but the quality is better. Want to buy cheap glasses, you can go to Danyang, Wenzhou and other places to wholesale.
Another way is to find it online. Local manufacturers basically have online stores and websites, and some large wholesale platforms and glasses networks also have suppliers. As long as it is formal, it is quite reliable.
As for the lens such as Zeiss and Essilor mentioned by netizens, it should be decided according to the positioning of the optical shop and the customers. This kind of high-grade lens has a high price and a small audience, so it is difficult for individual optical shops to get low-priced goods from manufacturers. You can set up a brand counter in the optical shop and put a few pieces on display. Some people really need to restock.