The price of sea cucumber ranges from several hundred to tens of thousands. Sea cucumber processing includes instant sea cucumber, semi-dry sea cucumber, dry sea cucumber, dry sea cucumber, freeze-dried sea cucumber and so on. The sea cucumber is produced in Dalian, Shandong and Fujian, and abroad in Japan, the United States, Russia and Iceland. The sea cucumber is wild and low-sown.
So you have a big problem.
Professionally speaking, the best in China is of course dried wild Liaoshen. If you need to learn to identify yourself, it is a systematic thing.