SHANGHAI, Jul. 13 (SMM) – SHFE 1709 tin opened high and edged lower yesterday evening and hovered around RMB 145,400/mt. SHFE 1709 tin opened at RMB 145,410/mt today and edged up, reaching RMB 146,350/mt in the afternoon, and closing at RMB 145,900/mt, up RMB 820/mt or 0.57%. Trading volumes decreased 2,908 to 12,480 lots, and positions added 1,304 to 22,194. SHFE 1709 tin will fluctuate at highs this evening.