SMM April 29th: On April 29th, the opening price of the main Shanghai nickel contract was 145,000 yuan/ton and the closing price was 142,850 yuan/ton, a decrease of 3,020 yuan/ton from the closing price of the previous trading day. Intraday trading increased from the previous trading day, with a trading volume of 291042 lots and an open interest of 100654 lots, an increase of 21,522 lots and an increase of 1,132 lots from the previous trading day. This combination indicates that both long and short positions are increased...