According to Taobao Dong Erpang's flagship store, every sea cucumber in Dalian Dong Erpang comes from the sea area of Changhai County, Dalian, the famous hometown of sea cucumbers. Located in Guanglu Island, Changhai County, Liaoning Province.

The sea environment is clean and undisturbed, the water temperature is low, and the fishing is 30 meters deep. The advanced liquid nitrogen quick freezing technology is adopted, and it is transported home by air to lock the nutrition and keep the fresh taste.