Lianyungang Donghai is the famous crystal capital of China. The crystals here are rich in styles and good in quality. But only local insiders can buy real crystals with them, and their obligation is mainly to wholesale small commodities. Crystal fidelity is not high, and crystal quality cannot be guaranteed.

The East China Sea in Lianyungang is a bit like Yiwu for small commodities. It is the largest crystal commodity distribution center in China, integrating various crystal styles and varieties. The number and scale of employees here far exceeds that of Tangke, and the market scale is also very large.