[Nickel prices for refined nickel rose slightly on May 15] Today, the price of SMM 1# refined nickel was 125,100-127,550 yuan/mt, with an average price of 126,325 yuan/mt, representing a 250 yuan/mt increase compared to the previous trading day. The mainstream spot premiums quotation range for Jinchuan No.1 nickel was 2,000-2,200 yuan/mt, with an average premium of 2,100 yuan/mt, showing a decrease of 50 yuan/mt compared to the previous trading day. The premiums and discounts quotation range for Russian nickel was 0-300 yuan/mt, with an average premium of 150 yuan/mt, also down by 50 yuan/mt from the previous trading day.