SHANGHAI, Jun. 28 (SMM) – US existing home sales in May are promising. EIA crude oil inventories are expected to grow, supporting base metals. LME zinc is expected to move between USD 2,725-2,775/mt today. SHFE 1708 zinc is expected to fluctuate between RMB 22,290-22,650/mt, with spot prices RMB 180-280/mt above SHFE 1707 zinc.