SHANGHAI, Sept. 21 (SMM) – Traded prices of spot aluminum in Shanghai were between RMB 17,530-17,560/mt on September 21st, with premiums of RMB 100-120/mt over SHFE current-month aluminum price. Low-iron aluminum was traded between RMB 17,600-17,640/mt. Traded prices of spot aluminum in Wuxi were between RMB 17,530-17,550/mt. Mainstream traded prices climbed with gaining SHFE aluminum prices. Goods holders’ selling interest at lower prices was weak and downstream buyers were also cautious. Transactions slightly rose in the market, but were mainly reselling among traders.