FIFA, April 19 (Xinhua)-- the ban on mining in the WA State of Myanmar has not diminished its power. After hitting the daily limit on April 17, the main contract of Shanghai tin closed up again on the 18th. At the same time, A-share non-ferrous metals plate also showed a collective rise, in which the tin industry chain leading tin shares rose again after the previous trading limit. In the face of risk events in the non-ferrous metal futures industry, industry insiders said that it is very important to do a good job in risk control when risk events come, and risk points should be strictly analyzed to avoid blindly chasing more. "it is very important for investors to do a good job of risk control when risk events come." Xiao Yufei, a non-ferrous analyst at South China Futures, said that investors should not blindly chase more, and should avoid trading on the left, because prices fluctuate violently due to emotions, and risk events often lead to overbuying and overselling. It will take a certain amount of time for prices to return to a rational range. (Shanghai Stock Exchange News)