There are several kinds of rings, issued by Suzhou Crab Industry Association, issued by Bacheng Crab Industry Association and made by their own brands. Because there are no specific regulatory measures for ring issuance, the market is chaotic. It should be said that crabs in Yangcheng Lake can't be sold, so some crab farmers don't wear rings, and they are afraid of trouble and easily break their feet. Crabs without feet can't be sold.
There are also fake rings on the market. It should be said that if you want to eat authentic food, you'd better go to Bacheng to buy it directly. Of course, even if you go directly, it may not be all true, and fakes are rampant.
China Yangcheng Lake Hairy Crab Network can be bought in a restaurant here.