SHANGHAI, Jun. 13 (SMM) – SHFE zinc prices opened lower today and later fluctuated narrowly. Spot premiums of #0 zinc expanded to RMB 20/mt against SHFE 1309 zinc contract prices, with traded prices between RMB 14,660-14,700/mt. #1 zinc prices were between RMB 146,30-14,640/mt. Cargo holders were holding back goods and holding prices firm as zinc prices plunged, pushing up spot premiums. Some arbitrage traders released spot goods, while downstream buyers purchased modestly, keeping transactions quiet.