SHANGHAI, Jun. 20 (SMM) - Spot aluminum largely traded between RMB 13,360-13,370/mt in Shanghai on Friday, a discount of RMB 80-90/mt over SHFE 1407 aluminum contract. Mainstream traded prices were RMB 13,350-13,370/mt in Wuxi, and RMB 13,380-13,390/mt in Hangzhou. Rising SHFE aluminum allowed sellers to hold offers firm. Downstream consumption picked up since the weekend is drawing near.