According to the flagship store of Taobao Dong Erfan Nourishment and Nutrition, every sea cucumber of Dalian Dong Erfan comes from the waters of the famous sea cucumber hometown - Changhai County, Dalian. It is specifically located in Guanglu Island, Changhai County, Liaoning Province.

The sea environment is clean, no intervention, low water temperature, 30 meters deep shallow fishing, in the use of advanced liquid nitrogen rapid freezing technology, shunfeng air transport to the home, locking the nutrition, to maintain the fresh taste.