Shanghai and Wuxi have daily limit of 5%. According to official website of Shanghai Futures Exchange, the Shanghai Futures Exchange stipulates that the price limit of Shanghai and Wuxi is 5%, and the price limit is also 5%. When the settlement price reaches the daily limit, it cannot go up or down again. Shanghai Tin refers to one of the futures varieties announced by Shanghai Futures Exchange, which mainly trades with tin as the subject matter. Shanghai tin daily limit refers to the situation that the Shanghai tin futures contract reaches the specified maximum increase limit within one trading day and can no longer be traded.