SHANGHAI, Apr. 23 (SMM) – SHFE 1307 zinc contract prices soared briefly but then inched down. Spot discounts of #0 zinc against SHFE 1307 zinc contract prices narrowed from RMB 70-90/mt, to RMB 50-60/mt, with traded prices between RMB 14,460-14,490/mt. #1 zinc prices were between RMB 14,430-14,440/mt, with supply remaining tight. Smelters were still holding back goods, while downstream buyers began to replenish stocks modestly, with overall transactions muted.